John Brooks replied to John Brooks's discussion Fun with Fluids
"The Blue Fluid is Dense ...Red is Not-So-Dense.....What happens when a "gate" is opened between 2 chambers?"
Jan 22, 2014
John Brooks posted a discussion
Greetings ... We live at the bottom of an Ocean of Air.Does anyone want to "play with fluids"?Here is an interesting Video about "Stack Effect"https://www.youtube.com/watch?v=4WI4f_EK22E
Jan 22, 2014
John Brooks replied to Mike Kandel's discussion January's Stump the Chump
"The inspiration for my guess comes from this Joe Lstiburek Video Starting at around 18 minutes in http://www.greenbuildingadvisor.com/roofs-video-part-2-ice-dams-lst...
course like Bud says...very few details have been provided....so only guessing"
Jan 24, 2013
John Brooks replied to Mike Kandel's discussion January's Stump the Chump
"It's hard to say without seeing the building,the orientation, roof overhang and venting.One possibility ....the microclimate near the wall is warmed by the sun...the warm air is buoyed up by surrounding cold air....warm air enters the roof thru…"
Jan 24, 2013
John Brooks replied to John Brooks's discussion "an Ocean of Air"
"Lucas, thanks for the video pick
I like your observation of "tipping point".....
here is another example of "splosive" phase change
https://www.youtube.com/watch?v=ZxsyL_RSsUw"
Nov 17, 2012
John Brooks replied to John Brooks's discussion "an Ocean of Air"
"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..."
Nov 15, 2012
John Brooks replied to John Brooks's discussion "an Ocean of Air"
"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…"
Nov 15, 2012
John Brooks replied to John Brooks's discussion "an Ocean of Air"
"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)
 
 "
Nov 14, 2012
John Brooks replied to John Brooks's discussion "an Ocean of Air"
"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
https://www.youtube.com/watch?v=xwKbpsOmHjE"
Nov 14, 2012
John Brooks replied to John Brooks's discussion "an Ocean of Air"
"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…"
Nov 14, 2012
John Brooks replied to John Brooks's discussion "an Ocean of Air"
"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…"
Nov 14, 2012
John Brooks replied to John Brooks's discussion "an Ocean of Air"
"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…"
Nov 14, 2012
John Brooks replied to John Brooks's discussion "an Ocean of Air"
"Vintage Apparatus
Magdeberg Hemispheres
http://physics.kenyon.edu/EarlyApparatus/Pneumatics/Magdeburg_Hemis..."
Nov 11, 2012
John Brooks replied to John Brooks's discussion "an Ocean of Air"
"Of Course, the tanker implosion also demontrates the amazing power of WATER and phase change"
Nov 11, 2012
John Brooks posted a discussion
We live at the bottom of "an Ocean of Air"The power of the atmosphere is pretty, pretty darn impressiveyet we seem to take it for granted and barely notice ithttp://www.youtube.com/watch?v=Zz95_VvTxZM
Nov 11, 2012
John Brooks replied to Robert Riversong's discussion Another Irreverent Whine from Dr. Joe
"Robert,
during heating season....
Isn't the 2"-3" of cellulose that you mention acting like a continuous cap that retards the cold air from spilling into the 3-d network of voids(and displacing the warm air)?
and isn't your example a "better" air…"
Oct 22, 2012
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