Is it possible to create a perfect vacuum? - Rolf Landua and Anais Rassat
Check out our Patreon page: https://www.patreon.com/teded View full lesson: https://ed.ted.com/lessons/is-it-possible-to-create-a-perfect-vacuum-rolf-landua-and-anais-rassat The universe...
==========
The universe is bustling with matter and energy. Even in the vast apparent emptiness of intergalactic space, there's one hydrogen atom per cubic meter. That's not the mention a barrage of particles and electromagnetic radiation passing every which way from stars, galaxies, and into black holes. There's even radiation left over from the Big Bang. So is there such thing as a total absence of everything? This isn't just a thought experiment. Empty spaces, or vacuums, are incredibly useful. Inside our homes, most vacuum cleaners work by using a fan to create a low-pressure relatively empty area that sucks matter in to fill the void. But that's far from empty. There's still plenty of matter bouncing around. Manufacturers rely on more ...
==========
The universe is bustling with matter and energy. Even in the vast apparent emptiness of intergalactic space, there's one hydrogen atom per cubic meter. That's not the mention a barrage of particles and electromagnetic radiation passing every which way from stars, galaxies, and into black holes. There's even radiation left over from the Big Bang. So is there such thing as a total absence of everything? This isn't just a thought experiment. Empty spaces, or vacuums, are incredibly useful. Inside our homes, most vacuum cleaners work by using a fan to create a low-pressure relatively empty area that sucks matter in to fill the void. But that's far from empty. There's still plenty of matter bouncing around. Manufacturers rely on more ...
