Forum: The Classroom
Topic: What Physics Is Really Good For!
started by: AnimalPrime
Posted by AnimalPrime on Jun. 18 2001,01:07
Pulsing light is good and all but Physics should be put to more practical uses like home made rail guns and potato launchers made from bbq starters and hair spray. ------------------
"Your mom busted in and said What's that noise?
Ahhh, mom you're just jealous it's the Bea-stie Boys!"
-Beastie Boys
Posted by DeadAnztac on Jun. 18 2001,01:27
Woah... Animal Prime... Been a while, eh?
Posted by Dysorderia on Jun. 18 2001,02:04
Physics=Good<Example>
Can hitting ground.
</Example> Chemistry+Physics=Better <Example>
Can hitting ground and spraying contents over onlookers due to explosive substances on bottom of can.
</Example> ------------------
Telnet - Reach out and finger someone < The Bastard Operater From Hell > Dysorderia - The one and only Hell-Bitch This message has been edited by Dysorderia on June 18, 2001 at 09:08 PM
Posted by Cyrino on Jun. 18 2001,02:39
Unopened can of beans on BBQ = Priceless------------------
They have cats in the future?
Posted by SLATE on Jun. 18 2001,03:02
"Your mom busted in and said What's that noise?
Ahhh, mom you're just jealous it's the Bea-stie Boys!"
-Beastie BoysLove the quote.
Posted by Non on Jun. 18 2001,03:52
Without physics there would be no gravity making it impossible to play horse shoes.
Posted by j0eSmith on Jun. 18 2001,03:56
Hoyl Christ its Animal Prime!------------------
When my flying days are over, and my death has come to pass
I hope they bury me upside down, so the whole damn world can kiss my ass
Posted by SLATE on Jun. 18 2001,04:25
quote:
Originally posted by Non:
Without physics there would be no gravity making it impossible to play horse shoes.
Without the topic physics, then nothing would change really. Without gravity though, you are right. No more 'shoes.
Posted by CatKnight on Jun. 18 2001,12:36
quote:
Originally posted by AnimalPrime:
Pulsing light is good and all but Physics should be put to more practical uses like home made rail guns and potato launchers made from bbq starters and hair spray.
thats what engineers are for 
Posted by Rhydant on Jun. 18 2001,18:19
homemade rail guns... that would be nice. i could pick off the nieghbor's cats.... they eat my dog's food...------------------
I may be paranoid, but not an Andriod.
Posted by The_Stomper on Jun. 18 2001,19:28
I have the physics calculations necessary to launch a watermelon off the roof of my school into the side of a rival school. I just need to get the chemicals needed.As soon as I get my diploma, I'm gonna fire that bitch off.  ------------------
I don't believe in stereotypes. I prefer to hate people on a much more personal level.
Posted by Non on Jun. 18 2001,19:33
distance, weight, wind resitance? tell us the equation. BTW you should use a rail gun
Posted by masher on Jun. 19 2001,10:01
s=u*t + (1/2)*a*t^2F=m*a and theres a modifications to those formulae, but thats about all you need. . Just remember, chemistry is but a small subset of physics. ------------------
"Once you have pulled the pin from Mr. Grenade, he is no longer your friend."
-Unknown (cited in nene, 2001)
Posted by CatKnight on Jun. 19 2001,11:01
how are you going to accelerate a watermelon through a rail gun? watermelons aren't magnetic. you'd have to use some sort of microwave rail gun, but that would end up cooking the watermelon while launching. then it would burst and explode watermelon goo everywhere. actually this could be useful...This message has been edited by CatKnight on June 20, 2001 at 06:02 AM
Posted by AnimalPrime on Jun. 19 2001,11:50
ok for the watermellon railgun you would need some massive copper rails and a big ass aluminum cart to hold the slug of the water melon. Then you need some power(he he he) i suggest really big capactiors but case them in steel they have a tendency to explode if improperly used(like in a home made rail gun designed to launch watermelons) Yes its been a while and "you gotta fight for your right to party!"------------------
"Your mom busted in and said What's that noise?
Ahhh, mom you're just jealous it's the Bea-stie Boys!"
-Beastie Boys This message has been edited by AnimalPrime on June 20, 2001 at 06:52 AM
Posted by Sithiee on Jun. 19 2001,23:05
not to mention a shitload of copper wiring to make the magnetic field around the gun to shoot the damn melon.------------------
quote:
Originally posted by Dark Knight Bob:
does anyone not notcie that sithee isnt actually talking out of his ass like a lot of people here
Posted by AnimalPrime on Jun. 19 2001,23:55
the current going throught the rails makes sufficient magnetic force. it's overcomming friction, and arching thats the problem. I built one for my gr 12 sci project. it only fired aluminum flat washeres and not very well at that but thats because it had serious issues with lateral force and the washer injection system but lots of wire isn't needed. This post is onlt on here because i can't get enough of seeing WHATS THAT NOISE? on detnet.
im not exactly sure of the rail gun equations but its something like Force=w*B*d*m
where w is the distance between the rails
B is the magnetic force in teslas
d is the length of the rails
m is mass
thats close but not exactly it ------------------
"Your mom busted in and said What's that noise?
Ahhh, mom you're just jealous it's the Bea-stie Boys!"
-Beastie Boys This message has been edited by AnimalPrime on June 20, 2001 at 06:59 PM
Posted by CatKnight on Jun. 20 2001,11:05
you couldn't possibly use copper wire for the conducting coils of a watermelon rail gun. they would turn to slag before they produced enough of a field. you would probably need gold or some alloy that conducts better. or even better, a supercondcutor. that would be sweet.
Posted by Wolfguard on Jun. 20 2001,13:13
here is what i want. a railgun that has a teathered projectile that i can retract and fire again.10' teather, you got to love the BattleBots Rules.
Posted by CatKnight on Jun. 20 2001,14:37
hmm i think the tension from the acceleration would break any light string. and if you used a heavy one then the projectile would weigh more and wouldn't have as much impact. remember that bot the let the little mini wedge bots out to randomly drive around? those were cute. if i was gonna make a battlebot (which i will if i get mad moola or sponsor) it will be a heavyweight sort of like mauler except with a counter-torque balance (weight spinning in opposite direction) that way i won't get fucked and flip myself hahaha
Posted by The_Stomper on Jun. 20 2001,14:43
Who said anything about this being a watermelon railgun? I'm just going to build the Mother Of All Potato Guns and stuff the thing inside. At least, that's what I hope.
------------------
quote:
Originally posted by Wolfguard:
Most glass marbles are about .67" in diameter.Here is a fun fact. Paintball guns are 68 caliber.
Posted by aletros on Jun. 20 2001,18:46
quote:
Originally posted by Dysorderia:
[b]Physics=Good<Example>
Can hitting ground.
</Example> Chemistry+Physics=Better
[/B]
Chemistry IS physics. The physics of charged particle interactions and such.
Posted by CatKnight on Jun. 20 2001,23:56
you take that back or you're toast, bitch! 
Posted by AnimalPrime on Jun. 21 2001,02:22
chill guys physics is good chem is bad (mainly due to my chem teacher to be, stupid lesbian robot) i still think copper would do the trick, and superconductor would be nuts because you would freeze the melon but gold could work well it just increases the $$$$------------------
"Your mom busted in and said What's that noise?
Ahhh, mom you're just jealous it's the Bea-stie Boys!"
-Beastie Boys
Posted by Sithiee on Jun. 21 2001,02:25
its the other way around. physics is the more advanced study of the interactions between particles, hence chemistry is basic physics. theyre all related, but physics iwas much more complicated.and WG, even better, just fling them over with a little projectile rig, then run a shitload of current through 2 prongs, flashwelding the projectile, and use your (hopefully) gigantic motor to pull that fucker around. if he can pull you, use a quick release. technically its still tethered, just to the other bot . this was actually an idea i had a long time ago when my friend and i were trying to make a rail gun, but all it did was weld. and im pretty sure copper is a better conductor than gold. especially that nice AV nearly 100\% oxygen free janks. ------------------
quote:
Originally posted by Dark Knight Bob:
does anyone not notcie that sithee isnt actually talking out of his ass like a lot of people here
Posted by CatKnight on Jun. 21 2001,12:23
lol sithiee you make it too easy. if you look on a < periodic table > you will see that gold is in the same group as copper and silver an unununium. the lower down you go the better the conductivity. this is due to the unique arrangement of electron shells in this group ([Xe]6s14f145d10). the d-shell steals an eletron from the S oribtal to complete it's shell, which allows for great electron transfer in a crystal matrix. theorectically Uuu would be an even better conductor if it existed or was possible to fabricate.
Posted by CatKnight on Jun. 21 2001,12:24
oh my god im turning into a chemist! kill me
Posted by Sithiee on Jun. 21 2001,19:48
so basically its just that copper = cheap as fuck, and its cheaper to make super oxygen free, so its used more? (sorry, i dont know much chemistry. i was asleep 90\% of the time, 5\% was takin tests, and the other 5\% i was talkin to my friends. i dont remember any of it. i still dont understand what a mole is. no, dont bother explaining, ill just forget anyway).
Posted by AnimalPrime on Jun. 22 2001,02:28
AHHHHHHHHH CHEM NOOOOOOO NOOOO NOOOOOOOO I HATE IT NOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOooOOooooooOOOOoooooOOOOOOooooOOOOOooooooo! NOOOOOOOOOooooooooooooooooooooooooo! NO!------------------
"Your mom busted in and said What's that noise?
Ahhh, mom you're just jealous it's the Bea-stie Boys!"
-Beastie Boys
Posted by DuSTman on Jun. 22 2001,03:27
I never saw what was so difficult about the concept of moles..A dozen is 12 of something.
a mole is 6.02x10^24 of something.. Same kinda thing. The first isn't difficult to grasp.. the second isn't either, but for some reason the concept seemed to take over a month to teach to the rest of my class.
Posted by j0eSmith on Jun. 22 2001,07:25
I thought a mole was 6.02 * 10^23 ?I know, simple. It took my class a painfully long time to learn too though.. ------------------
When my flying days are over, and my death has come to pass
I hope they bury me upside down, so the whole damn world can kiss my ass
Posted by DuSTman on Jun. 22 2001,07:36
d'oh, yeah, forgot the power *blush*
it's been a while Point is, the concept is simple.
Posted by Non on Jun. 22 2001,07:39
so if i had 5.01666 * 10^23 dozen of something i would have a mole of dozens or a dozen of moles... wait, ...carry the 2... over 12... hmmm.... /me raises hand.
Posted by j0eSmith on Jun. 22 2001,07:39
No worries, my chem final was today ------------------
When my flying days are over, and my death has come to pass
I hope they bury me upside down, so the whole damn world can kiss my ass
Posted by StanVanDam on Jun. 22 2001,16:47
6.023 x 10^23 was what were we taught for moles. Btw, anyone have any links for instructions on building a rail gun? Could be a project to attempt sometime..
Posted by AnimalPrime on Jun. 23 2001,02:09
< www.railgun.org >
these guys helped me a bunch on my physics rail gun project------------------
"Your mom busted in and said What's that noise?
Ahhh, mom you're just jealous it's the Bea-stie Boys!"
-Beastie Boys
Posted by The_Stomper on Jun. 27 2001,01:25
How about an EMP? They're always jolly good fun.
Posted by Non on Jun. 27 2001,04:17
If a railgun's not your thing try a gaus gun.
Posted by styx on Jun. 27 2001,05:13
hmmm... seems a bit difficult... what about something simpler,but equally destructive?
Posted by CatKnight on Jun. 27 2001,13:11
an EMP would require a megaton nuclear warhead and an ICBM rocket. i think he said he wanted something simpler.
Posted by Spydir on Jun. 28 2001,05:00
EMP's don't require a nuclear warhead. Fuck, me and three friends made one out of a old microwave. We used it to fuck hard disks and shit. It only have a radius of 2 and a half feet, but it's cool to see the blast... If I can find the directions somewhere I'll post them...------------------
Net Syndrome - < http://www.netsyndrome.net/ >
Spydir Web - < http://www.netsyndrome.net/spydirweb/ >
Posted by CatKnight on Jun. 28 2001,05:07
thats not an EMP thats a microwave.  edit: an EMP is a burst of high-energy electrons caused by ionization of a gas. This message has been edited by CatKnight on June 28, 2001 at 12:09 PM
Posted by Spydir on Jun. 28 2001,05:25
that's what it was. We made it from a old microwave. Isn't that what I said?------------------
Net Syndrome - < http://www.netsyndrome.net/ >
Spydir Web - < http://www.netsyndrome.net/spydirweb/ >
Posted by CatKnight on Jun. 28 2001,05:27
what do you mean you made it from a microwave? that part confused me. i thought you meant you just microwaved a hard disk. did you take apart the magnet and attach it to a high-voltage source, and then point it at a soft metal or a non-inert gas?
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