Kathy Loves Physics & History | How the Inquisition led to the Vacuum Pump: Weight of Air & How a Barometer Works @Kathy_Loves_Physics | Uploaded 7 years ago | Updated 18 hours ago
Hi! My name is Kathy and I love Physics and the strange, crazy, hidden stories behind all of our electronics and electrical theories. These stories are historically and scientifically accurate but also funny and quirky as hell.
Enjoy!
By the way Galileo was off by a factor of two with the air it is actually over 800 times lighter than water. However, he did pretty good for a guy with a scale and some grains of sand
A little math for the folks who want it to find the weight of the air in the Pantheon:
The Pantheon is (basically) a cylinder with a hemisphere on top: The radius is 22 m = 73.5 ft
Volume = 2/3Pi r^3 + Pi r^3 = 2,078,968 ft3
Density of air is 0.0765 lbs/ft3
Weight = 159,000 lbs!
I still say crazy right??
The animations of the barometer and the vacuum pump as well as the actors portraying Guericke playing a game of tug of war are from the video:
https://www.youtube.com/watch?v=h37XUBYYmjM
The music in the introduction and at the end are from the fabulous Kim Nalley. Check her out at: https://www.youtube.com/watch?v=TUI2sbNV9xk
Galileo Song:
Agnus Dei X - Bitter Suite by Kevin MacLeod is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/)
Source: http://www.amazon.com/Agnus-Dei-X/dp/B00QGC7W3Y
Artist: http://incompetech.com/
Hi! My name is Kathy and I love Physics and the strange, crazy, hidden stories behind all of our electronics and electrical theories. These stories are historically and scientifically accurate but also funny and quirky as hell.
Enjoy!
By the way Galileo was off by a factor of two with the air it is actually over 800 times lighter than water. However, he did pretty good for a guy with a scale and some grains of sand
A little math for the folks who want it to find the weight of the air in the Pantheon:
The Pantheon is (basically) a cylinder with a hemisphere on top: The radius is 22 m = 73.5 ft
Volume = 2/3Pi r^3 + Pi r^3 = 2,078,968 ft3
Density of air is 0.0765 lbs/ft3
Weight = 159,000 lbs!
I still say crazy right??
The animations of the barometer and the vacuum pump as well as the actors portraying Guericke playing a game of tug of war are from the video:
https://www.youtube.com/watch?v=h37XUBYYmjM
The music in the introduction and at the end are from the fabulous Kim Nalley. Check her out at: https://www.youtube.com/watch?v=TUI2sbNV9xk
Galileo Song:
Agnus Dei X - Bitter Suite by Kevin MacLeod is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/)
Source: http://www.amazon.com/Agnus-Dei-X/dp/B00QGC7W3Y
Artist: http://incompetech.com/
