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Question for students doing science or sumthin (thicko question)

I often hear words thrown around in science. One or two of them I actually understand. Well 4 of them actually:

Aphelion and apogee
Perihelion and perigee

They refer to closest points and furthest points in a planet's or satellite's orbit. My question is what is the actual difference? Why is it the Earth has a perihelion and the Moon has a perigee? For all intents and purposes they are the same thing but with different words. Why do scientists do this?


The military are even worse. They love their acronyms very much. "Head for G2 and I'l meet you there at 14:00". In other words he will be at the pub at 2 o clock. Sometimes their acronyms take longer to say than their definitions. Why say I.E.D when u can simply say "bomb"? Which brings me onto yet another silly question.

The word for my arse is spelled "bum" and not "bumb". So why is bom spelled "bomb"?
ffs there's the earth and the sun. Boom
helion for sun.
gaia for earth.
(edited 8 years ago)
Reply 4
Avatar for Kyx
Kyx
6
Original post by EricPiphany
helion for sun.


Original post by EricPiphany
gaia for earth.


BOOM!!!

Perfect answer!!!

5 Points to Gryffindor!
Original post by Kyx
BOOM!!!

Perfect answer!!!

5 Points to Gryffindor!


Does someone need a new feather?
Reply 6
Avatar for Kyx
Kyx
6
Original post by EricPiphany
Does someone need a new feather?


:dontknow:

Wadya mean?
Original post by Kyx
:dontknow:

Wadya mean?


I heard an explosion, thought you might be try the wingardiyum leviosa spell again.
Reply 8
Avatar for Kyx
Kyx
6
Original post by EricPiphany
I heard an explosion, thought you might be try the wingardiyum leviosa spell again.


Erm, yea...

If you have one... :ashamed:

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