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# Did you know?

Hope you will like the facts:

1. The most slippery substance in the world – polytetrafluoroethene (PTFE, or Teflon) – was discovered accidentally.

2. If an atom were the size of a stadium, its electrons would be as small as bees.

3. Atom is over 99.9% empty space.

4. The effect of Relativity made Astronaut Sergei Avdeyev a fraction of a second younger upon his return to Earth after 747 days in space.

5. The mass of our entire atmosphere is estimated to be some 5.5 quadrillion tons.

6. The lightning bolt is 3 times hotter than the Sun.

7. The diameter of a proton is approximately 0.000000000001 mm (1/25,000,000,000,000 in).

Note by Aman Baser
3 years, 1 month ago

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@aman baser These are really interesting facts.

- 3 years, 1 month ago

thanks

- 3 years, 1 month ago

I am having problem solving the numericals of electrostatics.What should I do?

- 3 years, 1 month ago

- 3 years, 1 month ago

see it

- 3 years, 1 month ago

But some facts must be known

- 3 years, 1 month ago

That doesn't warrant you not knowing facts :3 -_-

- 3 years, 1 month ago