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Comment by Stephen on March 14, 2018 at 9:00pm

Doone I just love the idea of a children's book about our hero's from science and literature. I especially like the one about Pablo Neruda. I love the style of the artwork.  

Comment by Doone has Fremdschämen on March 14, 2018 at 8:42pm

On Einstein's birthday, a lovely children's book about his unusual life

Comment by Doone has Fremdschämen on March 14, 2018 at 8:40pm

A lesser-known loveliness about Stephen Hawking: He once co-wrote a children's book about time travel with his daughter

Comment by Doone has Fremdschämen on March 14, 2018 at 8:40pm

Stephen Hawking on the meaning of the universe — a rare existential reflection from the man who set out to devise a theory of everything

Comment by Davy on March 14, 2018 at 4:23pm

'tis sad 

Comment by Stephen on March 14, 2018 at 3:05pm

Stephen Hawking death: The equation the professor asked to be put on his tombstone 

a drawing of a person: hawkingequation.jpg

The S that the equation serves to calculate is entropy: a complicated but significant part of black holes, that can be understood as a measure of how much disorder is present in the system. Sometimes the letter is written with a little "BH" next to it, standing for Professor Hawking and Jacob Bekenstein, the other scientist who did so much to help understand black holes.
The rest gives the important numbers required to calculate that entropy. The h is the Planck constant, so important in quantum mechanics; the G is Newton's constant, used to understand gravity; the A refers to the area of the event horizon; the c is the speed of light, made so famous by Einstein's great formula; and the k is Boltzmann's constant, which is a way of understanding how energy relates to temperature.

All of which may appear to be a little complicated. But, as ever, Professor Hawking gave an incredibly simple explanation of how he arrived at the itself deceptively simple formula.
"In particular, I wondered, can one have atoms in which the nucleus is a tiny primordial black hole, formed in the early universe?" he wrote in 2002, during the celebrations of his 60th birthday. "To answer this, I studied how quantum fields would scatter off a black hole. I was expecting that part of an incident wave would be absorbed, and the remainder scattered.

"But to my great surprise, I found there seemed to be emission from the black hole. At first, I thought this must be a mistake in my calculation. But what persuaded me that it was real, was that the emission was exactly what was required to identify the area of the horizon with the entropy of a black hole.
"I would like this simple formula to be on my tombstone."

https://www.msn.com/en-gb/news/world/stephen-hawking-death-the-equa...

Comment by Suzanna on March 14, 2018 at 3:03pm

Nice video, a great loss to science.

Comment by Stephen on March 14, 2018 at 2:37pm

THE MOST INSPIRING SPEECH BY STEPHEN HAWKING (1942—2018)

Comment by Stephen on March 14, 2018 at 12:50pm

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