Science Is Cool ;)

[Strathos]

How 'bout this:

When I was reading your post I saw a fool.

That was uncalled for.

 

[AV1611VET]

That was uncalled for.

Thank you, sir!

 

[Hans Blaster]

You did?

I thought a jester like you would get my joke. I'm disappointed.

 

[AV1611VET]

I thought a jester like you would get my joke. I'm disappointed.

I got it. I just ignored it to make a good point.

 

[sjastro]

The power of light.
Table salt crystals imaged with a home made polarizing microscope.

Normal light:

​

Polarized light:

 

[April_Rose]

Awesome!!

 

[sjastro]

Awesome!!

Thanks!!

 

[Brightmoon]

Sagittarius. I used to be able to see it from my former address. It always looked like a teapot to me

the constellations that really look like their names . Leo, Gemini ( twins) and Scorpio

 

[Brightmoon]

This website shows you what earth looked like from 750 million years ago until now . If you put in a specific city it shows were it would be located x million years ago. Florida used to be part of Africa and was torn off when Africa bumped into North America.

This is a photo you’ll have to google, sorry

 

[sjastro]

Toy boats appear to defy gravity.
Toy boats floating above and below a levitated liquid layer.

​

Inverted buoyancy makes tiny boat appear to defy gravity – Physics World

 

[FrumiousBandersnatch]

Toy boats appear to defy gravity.
Toy boats floating above and below a levitated liquid layer.

​

Inverted buoyancy makes tiny boat appear to defy gravity – Physics World

Interesting that it's the boat that the article focuses on rather than the levitating layer of liquid...

 

[sjastro]

Interesting that it's the boat that the article focuses on rather than the levitating layer of liquid...

Here you go.

 

[FrumiousBandersnatch]

Here you go.

Thanks! There's nothing like seeing a demo!

 

[sjastro]

During my days at Uni, Nitrogen Triiodide was used to powder the inside of locks and anyone using a key was in for a nasty surprise..........

 

[SelfSim]

During my days at Uni, Nitrogen Triiodide was used to powder the inside of locks and anyone using a key was in for a nasty surprise..........

How did the phantom 'powderer' (of the locks) escape blowing themselves up during the act, I wonder?
Was forensics used on the human remains for identification purposes?

 

[sjastro]

How did the phantom 'powderer' (of the locks) escape blowing themselves up during the act, I wonder?
Was forensics used on the human remains for identification purposes?

When Nitrogen Triiodide is wet it is inert.
It is pasted onto a key when inserted and removed leaves a sufficient amount of residue inside the lock.
It needs dry out in the lock to work which explains the presence of suspicious looking people armed with extension leads and hairdryers.

 

[SelfSim]

When Nitrogen Triiodide is wet it is inert.
It is pasted onto a key when inserted and removed leaves a sufficient amount of residue inside the lock.
It needs dry out in the lock to work which explains the presence of suspicious looking people armed with extension leads and hairdryers.

Aha!
And how do you know that, sir?: Read him his Rights Danno .. then book him!

 

[sjastro]

Aha!
And how do you know that, sir?: Read him his Rights Danno .. then book him!

You got nothing on me.
I might have written the instruction manual but the manual went up in a puff of iodine.

 

[sjastro]

Nitrogen Triiodide is the only chemical known that can be detonated by neutrons and alpha particles.

Crystals of lead azide, silver azide, cadmium azide, silver acetylide and nitrogen iodide were coated with a thin film of uranium oxide and irradiated with slow neutrons. Only the nitrogen iodide exploded. This was further evidence that the excitation or decomposition of a few adjacent azide molecules does not lead to explosion. The irradiation of nitrogen iodide by alpha particles does not produce an explosion unless there is impact by a large number of the particles. It is suggested that the passage of a single particle (even a large fission fragment) will not cause the explosion of azides and other sensitive materials. It will produce changes which affect the subsequent decomposition.
Bowden, F.P. 1958. Proc. Roy. Soc. (London); Journal Volume: Vol: A246