Sunday, 5 October 2014

What makes MS Dhoni a modern cricketing great?

Some monikers, or epithets, are never a true reflection of a person’s abilities or skills. In fact, I find them to be wholly unnecessary.  
Having said that, this article of mine, once again, was difficult to write. After all, how does one get the tag of a modern cricketing great? Could it be Rohit Sharma, who has electrified crowds with his scintillating array of shots? Or do I go for Brendon McCullum, whose ramp shot makes the Dilscoop look tame by comparison? Or is it Kieron Pollard, whose massive hits have won quite a few close games for his side? Or do I confer this sobriquet on the stylish Virat Kohli, who has had a phenomenal run with the willow in the last two years?   
No. There is one who has enthralled the masses much before these guys arrived on the scene and established themselves. There is one who continues to juggle multiple responsibilities while staying true to his credentials as a world-class batsman in limited-overs cricket. And he does all this without betraying fear, anxiety or nervousness. For these reasons alone, I choose him worthy of wearing the crown; the world knows him as Mahendra Singh Dhoni – India’s captain, first-choice wicket-keeper and a legend of the cricketing world. There are other supporting causes for my decision, and I shall elaborate on them in the following sections.


I used to think that playing in a blue jersey automatically brings out the calm persona of an Indian cricketer. After all, the colour is associated with water, the lifeblood of the human race. Peace and serenity, therefore, must be ingrained inside each player in the national squad.

In Dhoni, however, there is an almost supernatural aura of calmness. It is apparent in the way he walks, or rather saunters down, to the crease. His eyes betray no emotion caused by anxiety or pressure. Those concentration powers of his might not rival those of the legendary Rahul Dravid, but, in the limited-overs format, they are in a different league altogether.
It is this characteristic of the Jharkhand native that makes him such a dangerous foe for oppositions. They can bog him down with immaculate field placements, tighter lines and lengths, and shuffle their bowlers around, but that calm exterior simply won’t cave in that easily.  The oft-repeated quote about the Indian captain is that ‘he thrives on pressure’. Playing a lot of ODI cricket has certainly helped in whetting that appetite of his.

Controlled brutality

Ruthlessness is a defining trait pioneered by the great Sir Viv Richards; Australian Glenn Maxwell, West Indies marauder Chris Gayle and many others have, at varying times, re-defined this art. Closer home, the likes of Virender Sehwag, Yuvraj Singh, Suresh Raina and Yusuf Pathan have also enthralled crowds with their lusty power hitting.
Dhoni, however, outshines them all. The reason is simple: his form of brutality is much more controlled, albeit the hitting itself looks rustic and crude at times. He doesn’t just hit the ball; he persuades it in the direction he wants it to go in (a style reminiscent of the great Frank Worrell).
The transition has been remarkable. From 2005’s long-haired youth who sent every third delivery into orbit to the current elder statesman of the side, the raw, unbridled power he possesses in his forearms has become much more refined. Cold-blooded assassins prey on their targets in such a fashion; the CSK stalwart is no different and thus infinitely more lethal.

Unorthodox yet successful

During the seventh and eighth decades of the 20th century, purists ruled the roost. A ball, which was beautifully left outside off-stump, drew much applause from the crowds back then. However, with the arrival of pyjama cricket (as One-Dayers were called back then) and then its lightning-quick shortened version, there has been a paradigm shift in the expectations of the spectators; they want to see more huge hits and a lot of innovations.
In this sense, the likes of Mahi, Maxwell, McCullum, Kevin Pietersen, and AB de Villiers have flourished. All these batsmen have been extremely unorthodox in their methods, and purists today wouldn’t have given them half a chance of succeeding at the international stage three decades ago.
The Indian wicket-keeper doesn’t have the best footwork, but such is his timing and precision that the ball nonchalantly travels through the covers with just a gentle prod of the willow. He has also taken the helicopter shotto newer levels, though he looks more like a swordsman who has lost his balance. With a technique that digresses from what veteran watchers of the game would consider copybook cricket, Dhoni has truly reaped the rewards on offer!

Summary

There are many weapons an international cricketer possesses in his arsenal. The rapid rise of Twenty20 cricket has only served to add more firepower to that armoury. Blending the devil-may-care-attitude with a nerveless mind, powerful wrists and incredible shot-making, backed by the innate ability to soak in all the pressure, makes Mahendra Singh Dhoni the numero uno ODI batsman in the instant cricket era. I may receive a lot of flak for this, but the evidences in his favour are just too concrete to be ignored.

Monday, 29 September 2014

First look of MS Dhoni's biopic revealed; Sushant Singh Rajput plays lead


' MS Dhoni – The Untold Story', is going to be the name of Indian captain Mahendra Singh Dhoni’s biopic, due for release in 2015. The first look of the film’s poster was launched on Thursday. Sushant Singh Rajput will be playing the role of Dhoni in this film. The film has been directed by director Neeraj Pandey.
A few weeks ago, there were rumours that the Board of Control for Cricket in India (BCCI) would oppose the making of this feature film. But BCCI brushed aside any such sush rumours and mentioned that they have no issues until and unless it hampers the professional life of the Indian captain.
There have been many biopics on sports personalities in recent times. One of the best known was of Milkha Singh’s – ‘ Bhaag Milkha Bhaag‘; followed by Mary Kom’s biopic - "Mary Kom". Dhoni's biopic however is likely to make headlines unlike any other.

Tuesday, 9 September 2014

This wind turbine can fold into your backpack and charge your laptop

Scientists have 3D-printed a wind turbine that’s small and light enough to fit into a backpack.
Called AirEnergy3D, the turbine can plug directly into a laptop or phone to charge it with renewable energy, or can feed electricity back into a household power system, as Adele Peters reports for Fast Company. 
The turbine is designed to be portable so that it can be carried around by users, or moved around a house depending on where the windiest spot is. Its creators at Poland-based company Omni3D are now raising funds on Kickstarter for the device.
The vertical-shape of the turbine is designed to capture as much energy as possible from the relatively low wind speeds that come through city roofs and backyards, Peters explains. The blade shape is still being refined, but the turbine can already power a lightbulb, and with the Kickstarter funding the team is working towards a design that will be able to produce 300 watts, which is enough to charge computers and other electronic devices.
Impressively, the company is going to make all the plans for the 3D-printed turbine open source, so that others can customise the blades or continue to improve their design. "We want to make it as easy to develop upon the original project," Kamil Dziadkiewicz, an engineer from Omni3D, told Fast Company. "Thanks to 3D printing, everybody as a community can experiment and prototype better solutions for the machine."
The final kit is projected to cost users around US$350, and users assemble it themselves from some electronics and parts that they can 3D print. DIY lovers can also use their own parts and make it from scratch using the open source plans.
And for every US$4,000 (£2,500) pledged, Omni3d will send one of the constructed wind turbines to off-the-grid African villages, to help generate electricity where it’s needed most. The device can also be used in natural disaster situations in regions where solar power may not be the most efficient option.
So, you'll soon have no excuse for leaving home without renewable energy again

Thursday, 7 August 2014

286 runs off 1 ball - a fantastic cricket myth or reality?

A quirky sport of numbers, you’re never too far off from urban legends in cricket.
Fans love discussing the quirks of the game which leave them astonished. Take for example, a team getting all out for 3, or even 0! How about 7 runs off 1 legal delivery? Or Travis Birt’s 20 runs off 1 ball?
Some urban legends though, are just too fantastic, and without any reliable evidence, continue to hang in between the realms of myth and reality.

Origin of the legend

One such story is of a humongous 286 runs scored off one ballPall Mall Gazette – an English newspaper with roots in London, all the way back in 1865 – is the originator of this quite unbelievable tale which has travelled around the world ever since being first published on 15th January 1894.
In its ‘Sporting Notes and News’ section, the paper noted that a match was played at Bonbury in Western Australia between Victoria and a ‘scratch XI from the neighbourhood’. Victorians went in to bat and the first ball was hit into the branches of a tall jarrah tree which was inside the ground.
Now, as the legend goes, the home team appealed for a ‘lost ball’, but the umpires could see the exact spot where the ball was stuck and refused to declare the ball ‘lost’.
At this time now, the Victorians started running between the wickets. Unable to find any alternative, an axe was called for bringing down the tree. But as luck would have it, they failed to procure an axe and the batsmen kept on running.
Next, someone brought out a rifle to dislodge the ball from its position, and finally after many shots missing the target, the ball was finally shot down and brought to the ground. Fantastically, nobody caught the ball before it hit the ground.
The story goes on to state that the batsmen had run 286 runs by then, creating the world record for most runs off a single delivery in cricket. It adds that the Victorians declared then, bringing probably the shortest innings to a close, if this legend is to be believed, and won the match!

Myth or reality?

However fantastically weird the story may seem, it’s important to note that there’s no concrete evidence available to prove that it actually happened, but is one of the more popular urban myths that are hard to prove wrong.
After all, what was an English newspaper doing describing an Australian match when no such story was published in the local newspapers?
Though the news was covered in other parts of the world, they quoted the Gazette as the original source. The Australian media itself was full of scepticism, with Western Mail calling it an ‘enormous fairy tale’.
Running 286 runs on the pitch amounts to covering close to 6 kilometers while the ball was being retrieved from the tree. It makes little sense, but continues to be one fantastic tale!




Wednesday, 6 August 2014

WATCH: Five Fun Physics Phenomena

The cane balance. The phone flip. The teabag rocket. Three mind-bending tricks, but they're not even the strangest things you'll see in the latest episode of Veritasium, as Derek takes you through his Five Physics Phenomena.
We're used to Derek making sense of the world for us according to the laws of physics, but now Derek wants you to explain the physics of why a stream of water is attracted to an electrically charged cup, and why you can move a piece of cereal around a bowl of water using nothing but a magnet. And how the heck does a teabag rocket work anyway? Head to the comments section of his latest video to show off your physics prowess.
Want to see Derek live in Canberra this month? Celebrate National Science Week with us and our very special guest Astronaut Chris Hadfield on Sunday the 24 August at Llewellyn Hall in Canberra. Hosted by Derek from Veritasium and featuring YouTube science stars Dr. Carin Bondar and Destin from Smarter Every Day, the show starts at 5pm.

Wednesday, 30 July 2014

A Powerful, Portable, And Affordable Robotic Exoskeleton

Surviving a stroke or debilitating injury is often the start of a very long ordeal. Physical therapy can be slow and strenuous with no guarantee of recovery. Robotic exoskeletons can sometimes provide the support a ravaged body needs to heal—and strength when it can’t—but they typically cost more than a car and must be anchored to a wall and plugged into a socket.
In late 2012, a team of mechanical engineering students at University of Pennsylvania set out to build a portable, affordable exoskeleton. Two semesters of late nights and long weekends later, Elizabeth Beattie, Nicholas McGill, Nick Parrotta, and Nikolay Vladimirov had the Titan Arm: an efficient, lightweight, and surprisingly powerful robotic limb. Its actuator, or electronic muscle, could provide resistance during therapeutic exercises and can augment strength, allowing its wearer to lift an additional 40 pounds with little effort.
To ensure a slimmer frame than other exoskeletons and make Titan Arm easier for patients to use, the team situated its actuator in a backpack instead of in the limb itself. They also milled load-bearing parts out of aluminum to limit weight and power consumption. McGill, the electronics lead, created a software-and-sensor package to track arm movements and wirelessly relay the data. This would allow a patient to use a Titan Arm at home and a therapist to remotely monitor the exercises.
Potential beneficiaries, including stroke victims and an injured snowboarder, have already reached out to the team with encouraging comments. The positive response to their $2,000 prototype has made Titan Arm’s makers eager to push their invention toward a finished product and, to that end, they are now designing a more refined version. “We’ve been looking at 3-D printing to fully customize components, like tailoring a suit,” says Parrotta. 

1) POWER:

Lithium-polymer battery packs provide a day’s worth of power.

2) MUSCLE:

An electric motor in the backpack winds steel cables to rotate pulleys and induce arm movement. Beattie (left) designed a support system to safely distribute weight across a hip belt, elbow straps, and back plate.

3) BRAINS:

Software reads the positions of magnetic sensors in the steel joints to instruct movement, which the operator controls from a handheld device.
Inventors: Elizabeth Beattie, Nicholas McGill, Nick Parrotta, Nikolay Vladimirov
Development cost to date: $2, 000
Company: N/A

Saturday, 26 July 2014

Wingsuit



A stuntman wearing a wingsuit invented by Tony Uragallo jumped from a helicopter and plunged 731 meters (almost half a mile) before crashing into a stack of cardboard boxes.
Reaching speeds of 130 kilometers an hour (80 miles per hour), Gary Connery became the first person to fall from the sky and land without using a parachute.
"The landing was so comfortable, so soft - my calculations obviously worked out and I'm glad they did," said the 42-year-old Connery, who has performed stunts in the Harry Potter, James Bond, Indiana Jones and Batman films.
Thousands gathered in a field in Oxfordshire, England to witness the event. The crash site was a runway of 18,600 cardboard boxes stacked 45 ft wide, 12 ft high and 350 ft in length.
“We thought it was crazy. It's one of the most amazing things I've ever seen in my life” commented renowned U.S. skydiver Jeb Corliss noting that Connery plunged headfirst into the landing.
"He is obviously totally bonkers. I'm relieved it's all over," remarked his wife Vivienne.
But inventor Tony Uragallo explained that his "bird" wingsuit technology (known as the Rebel TonySuit) can dramatically slow down the plunge. Connery also wore a special neck brace to reduce the risk of spinal cord injury while crashing headfirst into the boxes.


Thursday, 17 July 2014

Watch what happens when a magnet is dropped through a copper pipe

Resistive force is pretty awesome.


So what is happening here? This amazing video shows the effect of Lenz's Law - as the magnet falls it induces a current in the copper pipe.
That current creates a magnetic field that opposes the changing field of the falling magnet, so the magnet is repelled and falls more slowly. It almost looks like it's floating through the pipe.
Watch it and get excited about the power of physics (try to ignore the elevator music in the background).


Sunday, 29 June 2014

Dravid to guide India in England

Rahul Dravid has been appointed as consultant for the Indian team on the tour of England.

Legendary Indian batsman, Rahul Dravid will be mentoring the Indian team during the tour of England. One of the greats of Indian cricket, Dravid, who retired from international cricket after the tour of Australia in 2011-12 will have the task of guiding a skilled but inexperienced set of batsmen in a series which is expected to be a tough test of endurance and temperament.
Dravid will be working with the Indian team for a short period of time ahead of the Test series that starts on July 9th at Trent Bridge, Nottingham. It is reliably learnt that Dravid will not be in a full-time role as yet as he has also signed up for commentary stints with host broadcaster Sky Sports as well as BBC's TMS (Test Match Special).
Sanjay Patel, Honorary Secretary of the BCCI said Dravid's services was specifically requested by the team management. "Let me clarify at the outset that Rahul Dravid has not been appointed batting consultant or in any other capacity. Since he is a legend and has enjoyed stupendous success in England, the team management wanted the boys to interact with him before the first Test," Patel told PTI on Sunday.
Dravid has been part of four tours of England and has been the most successful Indian batsman in England. In 13 Tests, Dravid racked up an impressive 1376 runs at a stunning average of 68.80. He also led India to a historic series victory in 2007, the first time India had won in England since 1986.
India will play five Tests on the tour with the first one scheduled to start on July 9th at Trent Bridge, Nottingham.

Thursday, 26 June 2014

Everything Google announced at Google I/O 2014 in one handy list.

For those who didn’t get the chance to tune in to Google I/O 2014 today, here’s a quick recap of everything the company announced.
Google began the announcement the same way it does every year – by talking about Android’s growth over the past year. Senior Vice President at Google Sundar Pichai said Android now has more than 1 billion active users per month.

Android One

Google kicked things off with the announcement of the Android One program to provide guidelines for a unified Android experience for those creating smartphones for the developing market. This allows Google to dictate the minimum hardware requirements for manufacturers around the world.
The first devices will arrive in India brands like Micromax and Karbonn, starting at less than $100.

L Developer Preview

Android’s upcoming L release features a new cross platform UI called Material Design, which offers app developers more precise tools to make customized typography, grid and color changes. Material Design also allows designers to add smooth animations at 60 fps using Polymer, a prototyping tool.
Additionally, Google has added a guideline to help designers build consistent look and feel.

L’s preview also teases lockscreen notifications and context-based authentication features (for example, if you’re wearing a paired Bluetooth watch while using your phone, it won’t prompt you for a pattern lock pass). Google touts L’s enhanced Art performance, 64-bit compatibility, and a new Android Extension Pack to support 3D graphics.
To help developers learn more about battery life, Google also showed off Project Volta to help identify battery discharge patterns to improve overall power consumption.
Lastly, L will come with more security, such as new patches for Google Play services and factory reset protection.

Android Wear

Google demonstrated its Android Wear SDK to show off select Android wearable functionalities. The touchscreen UI lets users swipe across Google Now cards and supported apps from the paired smartphone, and users can use the “Ok Google” prompt to create notes, reminders, alarms, calls and more. Material Design is also present in this wearable platform.
When a user installs an app from the Play store on their phone, a wearable counterpart is also installed on the smartwatch so the features are immediately synced.

Some of the Android Wear-equipped products include:
  • LG G Watch, available today in the Play Store.
  • Samsung Gear Live, also available today in the Play Store.
  • The Moto360 will follow later this summer.

Android Auto

The completely voice-enabled Android Auto is designed to help developers create a safe and seamless solution for using connected devices while driving. By connecting the driver’s smartphone to a compatible car, the Android Auto UI will cast on the car’s screen with quick shortcuts to location searches, suggestions and navigation.
Drivers can also send and receive text messages using solely voice command features to keep their hands and eyes on the steering wheel.

To cap it all, Google announced the Android Auto SDK that supports streaming radio and messaging services. The Android Auto release will be available later this year, with 40 partners including Hyundai, Porsche, Acura and more.

Android TV

Google combines all things entertainment into one with Android TV, which lets users watch live TV or stream content while adding a fluid search experience which provide information like cast information and related YouTube clips. Users can employ the remote control, D-pad or their smartwatch as control options.

Android TV also adds a gaming experience, enabling users to bring Play store games to the big screen. Users can cast content from their Android device to the Android TV just like a Chromecast.

Chromecast update

You no longer need to be on the same Wi-Fi network to cast content to Chromecast! Users can search for nearby devices and connect via the cloud. If Chromecast does not recognize you in the area, it will ask for a pin. This feature is opt-in, and will roll out later this year.

Android apps come to Chromebook

Just like the new L update that allows users to unlock their phone if using context and location, Chromebooks can also be unlocked if you have your phone with you. In addition, Android will be able to send notifications straight to the Chromebook for a continuous experience.
Select Android apps are now compatible on the Chromebook as well, including Evernote, Vine and Flipboard.

Bridging work and play

To connect a person’s work and personal life into one device, Google announced an Android for Work program to help applications live in one place. This allows native Microsoft Office editing in Google Docs as well.
Additionally, Google announced a premium Google Drive offering for enterprise customers which allows unlimited storage for $10 per user per month.

Google Cloud

Google demoed improvements to Google Cloud engine and touted the many apps that launched using the infrastructure, such as Snapchat and Secret. With the platform, developers can debug a live application running on hundreds of servers, and set alerts for various events to monitor performance.
This suite of tools includes Cloud Save, Cloud Monitoring, Cloud Trace and Cloud Debugger.

Google Fit

Google previewed the Google Fit platform, an open, multi-OS API for fitness apps and devices. Much like Apple’s recently announced HealthKit, Google Fit aggregates all of the user’s fitness data into one place. Partners include Nike, Adidas and Withings.

Google Play


Google Play shows off the Games profile feature, “Saved Games” section that shows a screencap of your game progress, leaderboards and “Quests” so gamers can set goals.
Google also announced that users can set up direct carrier billing for tablets so they can charge everything in one place.

Bonus

In the first hour of the Google I/O keynote, a protestor interrupted the presentation, calling attention to an eviction complaint related to Google’s head of eDiscovery, Jack Halprin. She was promptly escorted out, but not without making things rather awkward.
An hour later, a second protestor crashed Google’s party, shouting, “You’re all involved with a company that builds robots to kill people.” The complaint is thought to be related to the company’s recent acquisition of Boston Dynamics, which makes military-grade robots.

Sunday, 15 June 2014

The giant described as squid and a length of 160 feet.

source: click-and-check.blogspot.in/

On March 11, 2011, earthquake and tsunami damage in the latest nuclear power plant in Fukushima, Japan. As a result, some of the leaked radioactive substances harmful to the station, which led to contamination of the surrounding area.
a giant described as squid and a length of 160 feet. Genetic mutation that sustained this squid make such magnitude. A number of scientists have confirmed the possibility of the occurrence of such.

Thursday, 12 June 2014

Beas search massive and first-of-its-kind: Senior official

Mandi: The search for a group of Hyderabad engineering students washed away in the Beas river near here is not only massive in scale involving some 550 rescuers, but first of its kind in a treacherous terrain, strong current, and low visibility in churned up silt, a senior official said. 

Divers from the National Disaster Response Force and the army scouring the river bed full of jagged rocks and boulders just rely on the sense of touch to locate and pull out the bodies, the official said. 

It is a tough task. 

Now an unmanned aerial vehicle is also to be deployed to speed up the search. 

While seven bodies have been fished out of the river, the operation continued Thursday for the fourth day to locate the remaining 17 of the 24 students and a tour operator. They vanished in the flash flood-like surge in the Beas river after water from a nearby hydropower project was released without a warning, officials said. 

"Our divers are basically facing the problem of poor visibility. The river bed is full of mud and silt. There are also big boulders and rocks. It's only through feeling they are recognizing the objects lying beneath," National Disaster Management Authority vice-chairman M Shashidhar Reddy, who reached the accident spot Thursday, told IANS. 

A special underwater camera to locate the bodies was deployed Wednesday.

"The underwater camera has not made much success (due to muddy water). Now, we are going to deploy a UAE (unmanned aerial vehicle) Friday that will continuously recce the total area of operation," Reddy said in an interview.

More than 550 rescue workers from various agencies, including National Disaster Response Force (NDRF), the army, the Sashastra Seema Bal, the ITBP and the state police, continued with the dawn-to-dusk operation in over 15-km long downstream stretch of the river from the Larji hydropower project dam to the Pandoh dam. 

Reddy said: "Fifteen more NDRF divers will soon join the search operation. This will increase their total number to 39. We are reviewing their requirement from time to time. If need be, more will join soon." 

Reddy said this was the first-of-its-kind search operation. 

"Earlier, we did boat capsize operations. In this case, the terrain is difficult and, moreover, there is a constant flow of water. At some points the river is narrow and steep. With the melting of glaciers, especially during the daytime, the flow suddenly rises. So our focus of the operation is more concentrated in early hours when the flow is almost constant." 

He said most of the seven bodies recovered so far were close to the accident site and they were either trapped under the rocks or sunk in the silt. 

The body of T Upendra, recovered Thursday morning, was entangled in rocks near the accident spot, said the rescuers. 

"From today (Thursday) onwards, we are expecting that the bodies, after they get bloated, would automatically start surfacing in the water. But it can take one or two days more here as the water is cold," Reddy said. 

Experts say the rate of body's decay slows in cold. 

More than 60 students and faculty members of the VNR Vignana Jyothi Institute of Engineering and Technology in Hyderabad were on an excursion to Manali. 

Some of them were getting themselves photographed on the bank of the river Sunday evening when a wall of water washed them away. 

"The river level suddenly increased due to release of water from the Larji hydropower project dam, located near the accident spot, without warning," witnesses said. 

The police have registered a case against the hydropower project authorities for causing death by negligence and endangering life of others. 

The case has been registered on the basis of eyewitness's' accounts that the hooter was not blown by the project officials before releasing the water into the river. 

Friday, 6 June 2014

Game of Thrones exposed: the science of skull crushing

Could the Mountain actually explode a human skull using just his hands?




SPOILER ALERT!
I didn’t watch the whole trial by combat in the latest Game of Thrones episode. I couldn’t. I was fine up to the point where Gregor Clegane (the Mountain) started gauging Oberyn Martell’s eyes out with his fingers. But I had to stuff my face in a pillow when Cersei’s champion buried both hands into his opponent’s skull, exploded his brain out the top and flattened his cranium.  
Fans who watched the whole way though may feel the need, as we do, to settle the science of skull crushing. Could the Mountain actually explode a human skull using just his hands? 
There are two factors that need to be considered here; the strength of the Mountain and the force required to smash a human skull. 
According to a NASA report an average male can exert around 90 kg (200 pounds) or 1000 Newtons of force in a static push. A boxer can deliver 5,000 newtons of force with a single punch but their hand travels really fast (and, if you recall, The Mountain was pressing down not punching). 
Neither the Icelandic strongman, Hafþór Júlíus Björnsson, who plays the Mountain, nor George R.R. Martin’s fictional character are anything like the average white male.  Björnsson is thesecond strongest man in the world. He is nearly 7 feet tall, weighs 190 kg (419 pounds) and can lift 419 kg (925 pounds).  I haven’t read the books but Lily Rothman from TIME who clearly has reported that the Mountain is 8 feet tall, 190 kg (420 pounds) “with massive shoulders and arms thick as the trucks of small trees.” We have to assume that The Mountain is going to have a much better chance at popping a skull than your average male. 
So onto the second question: how much force required to crush a human skull? 
Human bone is incredibly sturdy. It is stronger than steel and concrete of the same mass. The human skull encases the most important organ of the human body, the brain, and has evolved to be as strong as possible to withstand trauma.  
Lenny Bernstein from the Washington Post spoke to neurosurgeon Tobias Mattei and reported that a skull fracture requires 500 kg of force. It would be possible for a man who weighed 500 kg (remember The Mountain only weighs 190 kg) to fracture a skull by stepping on it but, according to Mattei, it would be “impossible [for a man] to break [a skull] with his hands even if 90 percent of the 235 kg were biceps muscles.” Moreover, “It would be almost impossible … to ‘blow up’ the head’s top from inside… No explosion would be seen. The eyes of the victim would be pushed backward some few inches. That’s it.”
Cynthia Bir, a biomedical engineer at the University of Southern California, confirmed this assessment writing that “ there is no way to get the head to ‘explode’ by applying pressure from the eyes.  You would need to create pressure inside the cranium.  Even if you could generate pressure by squeezing the outside of the head, once the cranium is breached at the orifice where the eye nerves enter, this pressure would be greatly diminished."
Kyle Hill at the Slate asked the question about a similar stunt in the Star Trek movie. Quoting a bike-helmet study published in the Journal of Neurosurgery: Pediatrics, he wrote that 235 kg (520 pounds) or 2,300 newtons of force would be needed to crush a human skull, almost twice as much force as human hands could possibly muster. 
You may recall from high school physics that Force = Mass x Acceleration, so something quite heavy has to be travelling very fast to generate enough force to crack a human skull. The Mountain might be able to lift 235 kg (520 pounds) but he probably couldn't channel that strength into his fingertips and exert enough force to crush a human head. 
I’m calling it. In real life the Mountain could not break skulls like he did on TV. I’ll give HBO points for making it look believable. 
But could a chimpanzee do any better? Chimpanzees are about 4 times stronger than humans and have been known to tear people’s faces offRecent research even suggests that the evolution of large brains in humans was a trade-off for muscle strength.
And to wrap up, here's a little something to distract you from the painful knowledge of Tyrion’s imminent death: