Jenisi
02-22-2005, 01:06 AM
I love this class to death, and just for the hell of it I thought I'd share some thing's I find very interesting.... It's a class about the stars and galaxies in our universe... Basically a crapload of physics and a lot of migraines trying to figure the homework out... But soooo wonderful to learn. Anyway here’s some interesting facts. The sun and it’s planets were formed from interstellar material that was enriched in this way. This means that the atoms of iron and nickel that make up the body of the earth, as well as the carbon in our bodies and the oxygen we breathe, were created deep inside ancient stars. By studying stars and their evolution, we are really studying our own origins.
Now this one is pretty cool too… It takes approximately 170,000 years for energy created at the sun's center to travel 696,000 km to the solar surface and finally escape as sunlight... the energy flows outward at an average rate of 50 centimeters per hour, or about 20 times slower than a snail's pace.. the solar energy we get today was actually produced by thermonuclear reactions that took place in the sun's core hundreds of thousands of years ago....
I’m just sharing this because I’ve been doing homework for the past 4 hrs and now I can’t sleep so all I have on my mind is this stuff… And my friend was helping me do this homework, I was having problems calculating how much energy is released given certain masses… anyway… He said something to make me laugh.
Angela : does (2*10^-26kg)(3 * 10^8 m/s)^2 equal to what we are wanting?
bigjim_love_ale: the gave u the mass in kg i think
bigjim_love_ale: umm
bigjim_love_ale: yes
Angela : Are you sure?
Angela : heh
bigjim_love_ale: lol
bigjim_love_ale: well.... that would be the way to set up e=mc^2 using the metric system
bigjim_love_ale: so it will give u the energy in JU's
Angela : I don't understand how though
Angela : nothing cancels out unless you convert
bigjim_love_ale: lol well feel better knowing it took alber einsten to figure it out
Now this one is pretty cool too… It takes approximately 170,000 years for energy created at the sun's center to travel 696,000 km to the solar surface and finally escape as sunlight... the energy flows outward at an average rate of 50 centimeters per hour, or about 20 times slower than a snail's pace.. the solar energy we get today was actually produced by thermonuclear reactions that took place in the sun's core hundreds of thousands of years ago....
I’m just sharing this because I’ve been doing homework for the past 4 hrs and now I can’t sleep so all I have on my mind is this stuff… And my friend was helping me do this homework, I was having problems calculating how much energy is released given certain masses… anyway… He said something to make me laugh.
Angela : does (2*10^-26kg)(3 * 10^8 m/s)^2 equal to what we are wanting?
bigjim_love_ale: the gave u the mass in kg i think
bigjim_love_ale: umm
bigjim_love_ale: yes
Angela : Are you sure?
Angela : heh
bigjim_love_ale: lol
bigjim_love_ale: well.... that would be the way to set up e=mc^2 using the metric system
bigjim_love_ale: so it will give u the energy in JU's
Angela : I don't understand how though
Angela : nothing cancels out unless you convert
bigjim_love_ale: lol well feel better knowing it took alber einsten to figure it out