"an Ocean of Air"

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Permalink Reply by John Brooks on November 11, 2012 at 5:02am

Of Course, the tanker implosion also demontrates the amazing power of WATER and phase change

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Permalink Reply by John Brooks on November 17, 2012 at 1:52pm

Lucas, thanks for the video pick

I like your observation of "tipping point".....

here is another example of "splosive" phase change

http://www.youtube.com/watch?v=ZxsyL_RSsUw

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Permalink Reply by John Brooks on November 11, 2012 at 5:26am

Vintage Apparatus

Magdeberg Hemispheres

http://physics.kenyon.edu/EarlyApparatus/Pneumatics/Magdeburg_Hemis...

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Permalink Reply by Bud Poll on November 11, 2012 at 8:53am

Hi John,

We are all used to the standard reference of 14.7 psi at sea level, but when you convert that to pounds per sq ft it becomes scary, 2117 pounds for every ft².  Buoyancy is good.

Bud

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Permalink Reply by John Brooks on November 14, 2012 at 4:22am

Hi Bud, I stumbled on an interesting comment recently that I had never seen before....

A different way of visualizing the "scale" of One Pascal

One Pascal (one Newton per square meter) is very similar to a dollar bill(or any other US bill)

 

 

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Permalink Reply by John Brooks on November 14, 2012 at 3:15am

Hi Caan,

I hesitate to answer your question because it looks like you were merely trying to post a link to your website. Just in case you were serious...The photo shows the Magdeburg Hemispheres

An Explanation of the "Apparatus" was posted below the photo.... I will repeat it:

http://physics.kenyon.edu/EarlyApparatus/Pneumatics/Magdeburg_Hemis...

another explanation can be found here:

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

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Permalink Reply by Caan Soloman on November 15, 2012 at 4:57am

Lol not at all john. Just interested in what it was. I have a degree in thermo dynamics and looks simular to a apparatus we worked with back at university.

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Permalink Reply by John Brooks on November 15, 2012 at 10:48am

Hi Caan,

Here is a Link to the Main Page.....

For All sorts of Vintage Instruments and Apparatus

http://physics.kenyon.edu/EarlyApparatus/index.html

and here is a link to a most excellent Physics book from 1875

http://www.unz.org/Pub/GanotA-1875

the Illustrations are outstanding

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Permalink Reply by John Brooks on November 14, 2012 at 3:28am

Hi, Lucas "the Heretic" and "Airtight Sheathing Nut"

I am glad you joined HEP

Yes.... I do like Science Videos

Here is one from the not-so-nutty Professor.... that explains the Tanker Implosion

on a slightly smaller scale

http://www.youtube.com/watch?v=0fy4TLMNb6s

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Permalink Reply by John Brooks on November 14, 2012 at 4:09am

and here is another simple video .... showing similar results ...but different

there is a twist in this video....(the candle)

there is more going on here than just condensation and the atmosphere

http://www.youtube.com/watch?v=xwKbpsOmHjE

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Permalink Reply by John Brooks on November 15, 2012 at 2:08pm

Even better (in some ways) than Professor Julius Sumner Miller

Professor Walter Lewin

http://ocw.mit.edu/courses/physics/8-01-physics-i-classical-mechani...

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Permalink Reply by John Brooks on November 14, 2012 at 3:56am

And Lucas,...BTW (By the Way) you are partially to blame for my curiosity/obsession with Neutral Pressure Planes

It was your questions that sparked the comments By Michael Blasnik in this GBA Blog

http://www.greenbuildingadvisor.com/blogs/dept/musings/questions-an...

I also appreciate the link to the Klote Paper that you dug up for me

http://fire.nist.gov/bfrlpubs/fire91/PDF/f91013.pdf

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