Christophe Galfard


Born
France
Website

Twitter

Genre


Christophe Galfard is a French physicist and author with a PhD. in theoretical physics from Cambridge University. He is co-author with Stephen Hawking and his daughter on their first YA book, George's Secret Key to the Universe. In the past few years, he has given talks, and written a live show, about our universe attended by more than 130,000 people, of all ages and educational backgrounds.

Average rating: 4.29 · 3,862 ratings · 440 reviews · 10 distinct worksSimilar authors
The Universe in Your Hand: ...

4.36 avg rating — 3,231 ratings — published 2015 — 43 editions
Rate this book
Clear rating
Le prince des nuages (Le pr...

by
3.74 avg rating — 197 ratings — published 2009 — 10 editions
Rate this book
Clear rating
E = mc2

3.93 avg rating — 192 ratings7 editions
Rate this book
Clear rating
Le matin des trois Soleils ...

3.89 avg rating — 55 ratings — published 2012 — 6 editions
Rate this book
Clear rating
La colère du ciel et du ven...

by
3.93 avg rating — 40 ratings — published 2013 — 3 editions
Rate this book
Clear rating
Georges et la clé secrète d...

3.67 avg rating — 3 ratings
Rate this book
Clear rating
Le Prince des Nuages (L'int...

by
really liked it 4.00 avg rating — 3 ratings — published 2016 — 2 editions
Rate this book
Clear rating
Georges et les Secrets de l...

by
really liked it 4.00 avg rating — 5,041 ratings — published 2007 — 78 editions
Rate this book
Clear rating
Jirkův vesmírný lov pokladů...

by
4.19 avg rating — 1,791 ratings — published 2009 — 57 editions
Rate this book
Clear rating
Um Curioso Bem Informado

by
0.00 avg rating — 0 ratings2 editions
Rate this book
Clear rating
More books by Christophe Galfard…
Le prince des nuages Le matin des trois Soleils La colère du ciel et du vent
(3 books)
by
3.79 avg rating — 295 ratings

Upcoming Events

No scheduled events. Add an event.

“When left alone, quantum particles behave as multiple images of themselves (as waves, really), simultaneously moving through all possible paths in space and time. Now, again, why do we not experience this multitude around ourselves? Is it because we are probing things around us all the time? Why do all experiments that involve, say, the position of a particle make the particle suddenly be somewhere rather than everywhere? No one knows. Before you probe it, a particle is a wave of possibilities. After you've probed it, it is somewhere, and subsequently it is somewhere for ever, rather than everywhere again. Strange, that. Nothing, within the laws of quantum physics, allows for such a collapse to happen. It is an experimental mystery and a theoretical one. Quantum physics stipulates that whenever something is there, it can transform into something else, of course, but it cannot disappear. And since quantum physics allows for multiple possibilities simultaneously, these possibilities should then keep existing, even after a measurement is made. But they don't. Every possibility but one vanishes. We do not see any of the others around us. We live in a classical world, where everything is based on quantum laws but nothing resembles the quantum world.”
Christophe Galfard, The Universe in Your Hand: A Journey Through Space, Time, and Beyond

“A clock that is moving through space at a very fast speed does not tick at the same rate as a slow-moving watch gently attached to your wrist as you stroll on a tropical beach. The idea of a universal time - a godlike clock that could somehow sit outside our universe and measure, in one go, the movement of everything in it, how its evolution unfolds, how old it is and all that - does not exist.”
Christophe Galfard, The Universe in Your Hand: A Journey Through Space, Time, and Beyond

“The air around you is filled with floating atoms, sliding down the Earth's spacetime curve. Atoms first assembled in the cores of long-dead stars. Atoms within you, everywhere, disintegrating in radioactive decays. Beneath your feet, the floor - whose electrons refuse to let yours pass, thus making you able to stand and walk and run. Earth, your planet, a lump of matter made out of the three quantum fields known to mankind, held together by gravity, the so-called fourth force (even though it isn't a force), floating within and through spacetime.”
Christophe Galfard, The Universe in Your Hand: A Journey Through Space, Time, and Beyond

Topics Mentioning This Author

topics posts views last activity  
2020 Reading Chal...: Clear the Shelves - 2018 955 1557 Jan 06, 2019 02:46PM  


Is this you? Let us know. If not, help out and invite Christophe to Goodreads.