How many atoms on Earth? - Casual Physics 013

An important tool for guesstimating is scientific notation. It's essential for working with big numbers and small numbers. It also allows us to keep track of the factors of 10 in our calculations and it's these factors of 10 that we are trying to get right. We'll bring scientific notation to life with another planetary scale problem - how many atoms are there on Earth?

Scientific notation resources:

Chapters
0:00 Recap
0:55 Introduction
1:58 How many atoms on Earth
4:07 Volume of the Earth
8:43 Volume of an Atom
14:31 Putting it all together
16:09 Scientific notion for Guesstimation
17:16 Summary

[t.r.h.]

Thank you for the simplified explanation of atoms on earth. What is even more mind boggling is that there are more ways to shuffle a deck of 52 cards than atoms on earth. I drive along a stretch of roadway and try to imagine the shovels of earth out there in my line of sight and the atoms that exist on each shovel or look at a mountain that is 100 miles away and think of the number of dump trucks and atoms in each truck to empty the space. The atom count of both visuals would not even scratch the surface of the relevant count of what would be needed to reach the number of possible shuffles for a deck of 52 cards. I could not accept the reality of such a statement until I watched your video of estimating the atom count on planet earth.

[waltermorgan]

Love the videos!!! You are missing out - Promo'SM .