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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
2 years, 8 months ago

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@aman baser These are really interesting facts. · 2 years, 8 months ago

thanks · 2 years, 8 months ago

I am having problem solving the numericals of electrostatics.What should I do? · 2 years, 8 months ago

Just wanted to share this , i could'nt found a better place sorry. Please click this · 2 years, 8 months ago

see it

· 2 years, 8 months ago

But some facts must be known · 2 years, 8 months ago