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DO YOU HAVE SOME MYTHS THAT YOU WOULD LIKE MYTHBUSTERS TO TEST Answered

Do you know some myth that the mythbusters haven't already test. Describe the myth and we will debate it whether it is possible or not.

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VictoriaS46 (author)2015-12-28

myth or bust

if a person pulls one grey hair? does two or more grow back in its place

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cole.nowell.3 (author)2014-08-03

do you remember on harry potter how he bent the gun and it still fired will you please test this your facebook friend cole

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starforest (author)cole.nowell.32015-03-20

Do you mean the muzzle of the gun was bent and the bullet left the gun?

That couldn't have happened if the angle of the bend was too sharp. The gun would have fired, but the bullet would have stayed in the gun.

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liquidhandwash (author)2014-07-06

In cowboy films ricocheting bullets always make that cool petowowzzz sound, question is how do you spell that.?

oh and do bullet make that sound?

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Toga_Dan (author)liquidhandwash2014-07-09

* I'm not sure how to spell that sound. try a spellchecker.

* I've heard a similar sound when ricocheting wooden beads launched from a slingshot. I figure that the projectile tumbles at high speed after glancing off somethin like concrete.

* Another weird sound is that made by bowling balls when launched through the air. The holes whistle, and as the ball turns, the sound warbles. At one point in the history of the Denver Mad Scientist's Club, we were determining the range of our air cannon. So we stood downrange with GPS in order to mark the point at which the ball landed. You could hear and see the ball in the air a long way off, so setpping out of the way wouldn't be too hard. We got about 3000 feet, or 1/2 mile.

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liquidhandwash (author)Toga_Dan2014-07-09

firing bowling balls 1/2 a mile! remind me not to park at the back of the bowling ally . it really is a mad scientist club LOL

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liquidhandwash (author)2014-01-17

This video on youtube has been around for a while, its a wind powered car. It does my head in, it shouldnt work, but there it goes tearing across the desert upwind.

Its kind of like the "blow your own sail" myth

http://www.youtube.com/watch?v=5CcgmpBGSCI

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Couldn't the propeller be turning a drive shaft which, in turn, turns the wheels? It would work with the wind blowing in both directions but would also have its "strong" side. Just a thought.

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I dont doubt that it moves, just how does it go faster than wind speed?

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Kiteman (author)liquidhandwash2014-07-06

I know I'm late to this, but it doesn't go faster than the wind - when the wind is behind it, it crawls along. I think it may be moving purely because the wind is pushing the sails, not turning them.

As soon as it is heading into the wind, the sails are being turned the right way for driving the wheels, so the vehicle picks up speed (although the featureless terrain makes it very hard to tell exactly how much speed).

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liquidhandwash (author)Kiteman2014-07-06

It still does my head in...

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Kiteman (author)2014-07-06

I was watching the "supersonic pingpong ball" this morning, and when they were having trouble getting the ball to burst through the tape on the long vacuum cannon, I found myself yelling at them not to use tape at the front: the vacuum would hold a thin sheet of acrylic in place, until the air built up in front of the moving ball, at which point the sheet would fall away, releasing the air cushion that was slowing the ball.

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cowen (author)2014-07-05

Can a room be reinforced for a Tornado shelter by using bed liner spray and normal sheet rock and 2x4s

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Displayer (author)2014-06-20

Id like to know if you an jump of a rock, into a river and pull a fish out of the water to take home and cook. I have seen it on ads, small movies and billboards, is it really possible?

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nordesturm (author)2008-08-28

Everyone says it takes more energy to create Hydrogen gas than the amount of gas produced. However in the Civil War, Thaddeus Lowe created Hydrogen gas , several hundred thousand cubic feet per day, using iron ore and sulfiric acid. Is this a viable method of making Hydrogen gas for fuel.?

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critterfluffy (author)nordesturm2010-04-10

"Creating"(more appropriately freeing) Hydrogen from water using any method will consume energy.  It takes energy to make Oxygen happy when it is forced to either ionize or bond with something else.  This is because water is very energy stable, that is why it is so common. 

The method using Iron and Sulfiric Acid will consume the material used which lose this energy.  This means to produce more Hydrogen you need more iron and sulfiric acid.  These materials would then have to be liberated using electricity/energy before they can be reused.  The result is that it consumes more energy then you would get after including other factors. 

The bigger problem with hydrogen as a fuel is the difficulty in containing it.  Hydrogen has several properties that make it difficult to store.  A big one is Embrittlement.  Sadly, the only way we will likely use hydrogen as a fuel source is fusion.  Though it could easily be used in solar power generation as a chemical battery to store energy for use during low output times.

Right now, the most efficient method in use to produce Hydrogen in large quantities uses Fossil Fuels.  See HERE

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user

 I wonder what we could use to contain hydrogen. Instead of your usual steel tank (which suffers from embrittlement), use a steel tank with a modified inner lining. Like a glass lined tank or something. Or maybe use a ceramic lining. 

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Toga_Dan (author)nutsandbolts_642014-01-14

carbon nanotubes allow more H2 to be stored without so much pressure. I think its actually surface tension- or analagous to it.

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mercuryxixi (author)2013-11-19

What you show for us is really interesting and unique.

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xACIDITYx (author)2008-02-02

here is my myth: when you hold a gun upright and fire it, it kicks up. if you shoot a gun to the side, will it kick up or to the side?

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Bran (author)xACIDITYx2008-02-02

When shot upwards, a gun doesn't kick up - it kicks down. Newton's Third Law of Motion.

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comodore (author)Bran2008-02-03

I agree! Every reaction has an opposite and equal reaction.

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well said but nerds will one day rule the world

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xACIDITYx (author)Bran2008-10-28

Sorry to bump, but I said upright

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comodore (author)xACIDITYx2008-10-30

???I mean upright, is that like up, action - reaction in opposite sides...

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xACIDITYx (author)comodore2008-10-30

No, Upright like holding the pistol in a normal fashion.

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comodore (author)xACIDITYx2008-10-30

Well, than it kicks towards you, in opposite side is the reaction

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xACIDITYx (author)comodore2008-10-30

In reality, yes, but with the pivot of your shoulder it kicks upward.

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comodore (author)xACIDITYx2008-10-30
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xACIDITYx (author)comodore2008-10-30

Have you ever shot a gun?

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comodore (author)xACIDITYx2008-10-31

No, but I believe in physics...

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xACIDITYx (author)comodore2008-10-31

Well, that's why. If you haven't shot a gun, you won't know that it kicks up because it pivots on your shoulder.

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I3uckwheat (author)xACIDITYx2011-02-16

That isn't kicking up words its transfer of motion... guns kick straight back and if you use a semi auto pistol it will seem like it kicks up because of the offset force of the slide or the firing mechanism. If you suspend a gun in midair and fired it it would kick straight back.

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comodore (author)xACIDITYx2008-11-01

I does, because there is a reaction equal force that propelled the bullet... I don't say there isn't!

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nutsandbolts_64 (author)comodore2010-04-10

(I know this is a late reply) I'm gonna lay the events out step by step.
Step 1: Gun has been fired. (Assuming it was a pistol)
Step 2: Newton's law says the gun will go backwards as the bullet flies out.
Step 3: Wrist acts as a pivot that makes the pistol "kick up".
In the case of the M16 the stock is designed so there is no viable pivot to make the gun pivot. 

To answer Skate6556's question it is more likely that the gun will kick sideways. Take note that I only said "more likely" due to the fact that I haven't shot a gun myself. 

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nutsandbolts_64 (author)2010-01-31

Just something I would like them to test regarding the Archimedes Solar Death Ray.


It's a solar laser okay. I know it looks weird, sorry, it's paint, I've got nothing else as a visual aid. Anyway, the weird looking egg-shaped stuff there focuses sunlight onto a mirror which then reflects the light to another mirror which combines the energy of the two collectors and sends them of to the other ship where the sailors take a dive into the abyss of shark infested waters...

I've been wanting to comment that to the Mythbusters but I don't know how, so I just told you people instead. Or maybe I should have just asked you how?

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user

This is a ... 'special' drawing

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It was over 2 years ago... And yeah, record time: 5 seconds on that one.

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user

they've done this already it was an epic fail

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all they did was get 1 parabola and use that only parabola (except in the other revisit they used a lot of parabolas, but they didn't get the focal point right in the first place)

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This myth was tested in the 2nd season in 2004 and then revisited in the 4th season in 2006.  They found that while it did produce a lot of heat and had potential it was too difficult to target a ship on the water.

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I already watched those episodes. This one has the advantage of having multiple collectors so there would be more heat on 1 spot. It also has an added advantage that the last mirror could be pivoted to actually aim at the enemy ships. The only complications are aligning the mirrors and making sure the last mirror doesn't melt. Also, some guy might just step into the line of fire and may 1. Get instant sunburn or 2. Clothes catch on fire. 3. Suffer 2nd or 3rd degree burns (depending on quantity/quality/surface area etc. of the mirrors). I'll be sure to get a better visual aid so you people can better understand. 

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user

The final lens would have to convex and the men would have to stand in very specific spots which is pretty doable.  This mirror would also get very hot as you said so it might be a good idea to cool it somehow.  Other than that, the idea is possible.  You should check out this instructable if you haven't already.  Same basic idea with a modern take:
Fresnal Death Ray

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 lol, so why wouldn't the mythbusters use a Fresnel lens! and cooling the last mirror makes no sense to me because then you'll lose all the heat needed to set fire to the enemy ship. maybe I'll just find some weird heat-resistant mirror technology for the last mirror, or just regulate the heat coming out of the parabolas/lenses by covering up some parts of the collector to block some light so less heat... you get it

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The mythbusters wouldn't have used this because they wanted a more plausible build.  This tech simply didn't exist during the era of the myth.  It is a cool demo of solar energy though.  Just FYI, you shouldn't need to cool the main mirror unless you are going to have 100's of secondary mirrors.  In that case, the most efficient mirror system is only 80% efficient at reflecting light(reference) so you should expect the main mirror to reach 25% the temperature of the target(likely not accurate as it just assumes all light converts to heat but good enough for quick and dirty theory).  This means if you want to burn wood(ignition temps) you would want the point of light to reach about 430 degrees celcius to cause ignition in most woods in 20 to 30 seconds.  In that time the mirror would quickly reach about 100 celcius and then get warmer over time.  All numbers are guesses but it sounds do-able as an efficient metal mirror(not glass) should be able to cope with these temperatures.  I would stick with the fresnel lens though as a lens is much more efficient at focusing light and shouldn't heat up hardly at all.  If you want to up the amount of energy focused without getting a bigger lens then you could use mirrors and the fresnel but I think you would melt the lens pretty quickly.

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 Now, the ship is plastered in pitch so that should light fairly quick. The sails should also be easy to light so there is some hope for this build to work. Now, to get an e-mail the Mythbusters... somehow...

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