Black Holes Aren’t Black After All, Say Theoretical Physicists
Collapsed stars are just too big to trap light forever
Black holes are a crucial part of the great cultural legacy of Einstein’s theory of general relativity. They have fascinated scientists and laypeople alike since they entered the public consciousness in the latter half of the 20th century.
But it may be time to say goodbye to the notion of regions of space so dense that even light becomes trapped within them. In the last year or so, an intense debate about the paradoxical properties of black holes has left a number of theoretical physicists, including Stephen Hawking, suggesting that black holes might not exist at all, at least not in the form that anyone had imagined.
World’s largest earthquake damper
A tuned mass damper, also known as a harmonic absorber, is a device mounted in structures to reduce the amplitude of mechanical vibrations. Their application can prevent discomfort, damage, or outright structural failure. They are frequently used in power transmission, automobiles, and buildings.(source:Wikipedia)
This 728 tons steel pendulum is installed in one of the world’s tallest buildings, the taipei 101 in Taiwan. It helps stabilize the building in case of strong winds and earthquakes, through simple mechanics, when the building moves in a direction it swings in the opposite direction reducing movement by 40%. You can understand how it works by looking at the small GIF image.
It cost $4 million to install the huge damper in the skyscraper but architects and engineers said it had to be done. It spans across 4 of the building’s stories and it was assembled on site because it couldn’t be lifted by a crane, due to its enormous weight.
Here’s a video of the damper in action, on May 12th,2008, when a horrific earthquake hit one of China’s provinces and the tremors reached as gar as Taipei. As the building started to shake, people ran towards the center to see the damper in action, it did it’s job.
Redken Science & Beauty II, book cover, 1975
"You can’t force creativity, problem solving, and invention. It’s a process that starts from within you.”
INSIDE THE INVENTIVE MIND:
VP, University Programs
Vice Chair, IBM Academy of Tech.