if i had a bamboo pole, a bamboo pole right here and it went up about 30 kilometers and that bamboo pole was one square centimeter in area. and i considered the mass of all the air that would fill up that bamboo pole, you know, what all of that mass would be? it would be one kilogram, one square centimeter up about 30 kilometers will be one kilogram of air. so that 1 kilogram pushes down with a weight. and it pushes down with a weight of 10 newtons. so it turns out the pressure due to the atmosphere here at sea level is 10 newtons for every square centimeter. and we're talking about si units, we talk about square meters. it's a little unwieldy, but it turns out it's about 10 to the fifth square ceimeters and one square meter, and it turns out if you have one square meter, think of a great big sewer pipe about one square meter in cross-section. and that sewer pipe goes up 30 kilometers, you have about 10 to the fifth newtons pushing down and that's the atmospheric pressure, 10 to the fifth newtons per square meter and that's due to the weight of air above. that being the case, i've got a

if i had a bamboo pole, a bamboo pole right here and it went up about 30 kilometers and that bamboo pole was one square centimeter in area. and i considered the mass of all the air that would fill up that bamboo pole, you know, what all of that mass would be? it would be one kilogram, one square centimeter up about 30 kilometers will be one kilogram of air. so that 1 kilogram pushes down with a weight. and it pushes down with a weight of 10 newtons. so it turns out the pressure due to the atmosphere here at sea level is 10 newtons for every square centimeter. and we're talking about si units, we talk about square meters. it's a little unwieldy, but it turns out it's about 10 to the fifth square centimeters and one square meter, and it turns out if you have one square meter, think of a great big sewer pipe about one square meter in cross-section. and that sewer pipe goes up 30 kilometers, you have about 10 to the fifth newtons pushing down and that's the atmospheric pressure, 10 to the fifth newtons per square meter and that's due to the weight of air above. that being the case, i've got