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Tag archives: mechanics

Blockbuster physics, bowling balls and feathers in a vacuum, and more

 

By Tushna Commissariat

The results of a successful scientific experiment can make scientists very happy. Indeed, in the clip above, taken from the BBC TV series Human Universe, one scientist exclaims “holy mackarel!” when he sees the outcome he was hoping for. In the video, everybody’s favourite physicist Brian Cox carries out an experiment similar to Galileo’s Leaning Tower of Pisa experiment, where he tested that no matter the mass of objects, they fall at the same rate under gravity. In the video above, Cox drops a bunch of feathers and a bowling ball in the world’s biggest vacuum chamber – the Space Simulation Vacuum Chamber at NASA’s Space Power Facility in Ohio, US. In the slow-motion video, you can see with exquisite clarity just how accurate Galileo’s prediction was, as the feathers and ball land at precisely the same time. We came across this video on the Dot Physics blog on the Wired Science network, written by physicist Rhett Allain, where he has worked out some of the maths and pointed out some of the nuances of the above experiment, so make sure you take a look.

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Earth’s cousin, alien intelligence, Galileo’s game and more

Illustration of Kepler-186f

Artist’s illustration of Kepler-186f. (Courtesy: NASA/SETI Institute/JPL-Caltech)

By Tushna Commissariat

Early last week, astronomers announced that they had found the first Earth-sized exoplanet that is comfortably within the habitable zone of its parent star, using NASA’s Kepler telescope. The new planet, dubbed Kepler-186f, is a close cousin of the Earth as it has a radius that is only 10% larger than that of the Earth, meaning that it could have liquid water on its surface, allowing for the tantalizing possibility of some form of life to exist upon it. At last count, Kepler has now discovered and confirmed 1706 exoplanets.

So it was rather interesting to come across two stories that looked at the implications of life beyond our planetary neighbourhood. Paul Gilster, who writes the Centauri Dreams blog had a rather interesting post on how artists and illustrators need to work with scientists to depict each new exoplanet, to make the images look visually stunning, while still being scientifically accurate. Gilster also talks specifically about the image (see above) that illustrates the newly found Kepler-186f.

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Bananaman, fusion boy, an astronaut and more

By James Dacey

The Red Folder is bulging this week with some weird and wonderful physics stories from around the Web. Here is a round-up of some of the best we have stumbled across.

One of the more eye-catching articles this week included the surreal image of Stephen Hawking posing for a picture with a bunch of men all dressed as Bananaman. In case you’re not familiar with this brilliant character, Bananaman is a comedy super hero created in the 1980s by British cartoonists who valued the importance of nutrition. When Eric Wimp – an ordinary British schoolboy – eats a banana he turns into our hero, a fully grown man in a blue and yellow suit with special powers to rival both Batman and Superman. Anyway, I digress. According to the Telegraph, the 10 besuited chaps in question were on a stag do in Cambridge. They were lost (perhaps a few too many banana liqueurs?) when they turned a corner and spotted the world-famous cosmologist getting out of a car. The result was a group shot with far more a-peel than any of those self-indulgent Oscars selfies that have been doing the rounds this week. Please accept my apologies for that bad pun.

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