[Closed] The I LOVE SCIENCE Thread

...last night's Big Bang Theory? 😉

Earlier this week I started to photograph this (picture below is a test shot from a few years ago):

[url= http://farm8.staticflickr.com/7226/7134908583_c48a0a8f79.jp g" target="_blank">http://farm8.staticflickr.com/7226/7134908583_c48a0a8f79.jp g"/> [/img][/url]
[url= http://www.flickr.com/photos/egg_n_bacon/7134908583/ ]M42[/url] by [url= http://www.flickr.com/people/egg_n_bacon/ ]jwrfooo[/url], on Flickr

The sky was dark and clear and it was just visible with the naked eye. The thing that blows me away is that it's over 1,300 light years away but can be seen without optics. I guess being a cloud of luminous gas 240 trillion kilometres across helps.

J

Periodic Videos have done some great videos!

With a triangular drill bit, you can drill square holes.

guess being a cloud of luminous gas 240 trillion kilometres across helps.

Pah! It's not that special, just pay a visit to the bedrooms in a B&B after a lads MTB'ing trip!

Here's two I've seen recently

Part 2 - Result & Conclussion

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Non-Newtonian Fluid

My pet hate is people refering to various liquids as non newtonian fluids. Water in a saucepan on a hob is non newtonian (it's viscocity decreaces with time)! What they usualy mean is shear thickening fluids.

Newtonian fluids are like ideal gases, they don't exist in real life, but are a good aproximation in a lot of situations.

1500 ping-pong balls, liquid nitrogen, and a dustbin.

Apparently Coke and Mentos is down to the pores on the Mentos providing a nucleation site for the CO2.

Here some with added guns

My pet hate is people refering to various liquids as non newtonian fluids. Water in a saucepan on a hob is non newtonian (it's viscocity decreaces with time)! What they usualy mean is shear thickening fluids.

Newtonian fluids are like ideal gases, they don't exist in real life, but are a good aproximation in a lot of situations.

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I used to love science when I felt it was being used in the best interests of mankind. After much reflection I'm now a low-tech technophobe.

Superhydrophobicexpealidocious...

With a triangular drill bit, you can drill square holes.

I refuse to believe it.....

DrP

I refuse to believe it.....

http://en.wikipedia.org/wiki/Reuleaux_triangle

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goes the weasel[/url]

May or may not have been my class in some relaxing outdoor expt.

Not the most amazing thing, more a demonstration of some very basic science, but "welding by friction" looks pretty cool:

But that plane was moving forward relative to the cones!

0-day science from the MIT...

From "Look around you" (Peter Serafinawitz... sp?)

Cougar - that's the devil's work!

As we seem to be using the bits from the end of QI, I vote for;

EDIT: Although to be fair, that's probably more of an "I LOVE ENGINEERING!".

Nice one steveoath

"Thants"

This is one weird reaction

Aeroplane and conveyor belt anyone?

I find it disturbing that the pilot didn't think his plane would take off. If I were in charge, he'd have his license revoked. He clearly has no idea what he's doing.

My offering:

Bonus - health and safety concerns thrown to the wind

[quote=ron jeremy said]Aeroplane and conveyor belt anyone?

^^^^^ up there fella

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I mentioned [url= http://www.dangerouslaboratories.org/radscout.html ]this guy[/url] on another thread. As a kid he was refining uranium in his shed using coffee filters. The mug shot is more recent, taken when he was convicted of stealing smoke detectors, presumably to fuel more nuclear homebrew.

Science can turn against you.

Long insane video of A german woman becoaming radioactive and then evaporating her own piss

Now a couple my students made. Sorry they are not on Youtube so its links. They are both about balloons and have a few small errors. The first at least is visually impressive. We got a weather ballon and filled it with air. At this point it has a mass of 3kg but almost no weight (Ok it has a weight of about 30N but almost all supported by bouyancy). Any way you can throw it at people and knock them over

http://scicast.org.uk/films/2011/06/balloonium-experimento-2.html

http://scicast.org.uk/films/2010/05/balloonium-experimento.html

Why in that first video of the weather balloon does she fall over before the balloon hits her?

But that plane was moving forward relative to the cones!

That's the point. The plane will not take off if it's static and no air is passing over the wings but because the wheels of the plane are not driven and freewheel they don't stop the plane from moving forward. The plane is pulled through the air by it's propeller not driven by it's wheels.

Nooooooooooooooooooooooooo!

My pet hate is people refering to various liquids as non newtonian fluids. Water in a saucepan on a hob is non newtonian (it's viscocity decreaces with time)! What they usualy mean is shear thickening fluids.

Umm can I get a reference for that, coz everything I can find says otherwise. Also I'd have thought that people have more experience with shear thinning that thickening fluids (Toothpaste, Ketchup that sort of thing)

Science can turn against you.

Yes, it can.

Why in that first video of the weather balloon does she fall over before the balloon hits her?

I suppose its a flinch but she got a real wack.

the plane on a treadmill is just idiotic. surely?

Rubens Tube

Got one sitting in my workshop, made in a slightly less slipshod way than the one in that video. I thought it wise to make something thats on fire out of something that doesn't burn. Spent the summer making props for a school science tv shoot and kept that one.

When using a Rubens tube is it important to get the air out before putting the gas in?

When using a Rubens tube is it important to get the air out before putting the gas in?

you want to run the gas through for a while to dispel any air before you light it. Because of that you want a pretty high ceiling when you light it as theirs a pretty big 'whoomph'.