Search found 7 matches

by puma guy
Mon Sep 21, 2015 9:13 pm
Forum: Off-Topic
Topic: History Channel Makes a startling discovery.
Replies: 34
Views: 5724

Re: History Channel Makes a startling discovery.

WildBill wrote:
puma guy wrote:
The Annoyed Man wrote:
jimlongley wrote:
The Annoyed Man wrote:
puma guy wrote:I was watching a History Channel show about Neanderthals. I didn't catch it all but they were showing some pools of water from a volcanic source and said the water temperature was 300 Degrees F. Like new math I guess that's the new physics. "rlol" "rlol" "rlol"
Maybe they meant a nice balmy 300º Kelvin......which would be a comfortable 80.33º F. :lol:
That's probably it, TAM, they just forgot to mention which scale they were using.

I often quote the speed my vehicle will achieve in furlongs per fortnight.
:smilelol5:
:lol:I considered that so I looked up the conversion to Kelvin. I remembered the number 460 but couldn't recall what the relationship was. It's part of the conversion formula. I laughed at myself that I even remembered 460, especially since I can't remember where I put my keys.
I thought it was 273? My keys are in my pocket. I think? :shock:


Celsius to Kelvin Conversion [K] = [°C] + 273.15 I guess that's why 273 was in your mind.
Fahrenheit to Kelvin Conversion [K] = ([°F] + 459.67) × 5/9 You didn't happen to see my keys anywhere did you? :headscratch
by puma guy
Mon Sep 21, 2015 5:40 pm
Forum: Off-Topic
Topic: History Channel Makes a startling discovery.
Replies: 34
Views: 5724

Re: History Channel Makes a startling discovery.

The Annoyed Man wrote:
jimlongley wrote:
The Annoyed Man wrote:
puma guy wrote:I was watching a History Channel show about Neanderthals. I didn't catch it all but they were showing some pools of water from a volcanic source and said the water temperature was 300 Degrees F. Like new math I guess that's the new physics. "rlol" "rlol" "rlol"
Maybe they meant a nice balmy 300º Kelvin......which would be a comfortable 80.33º F. :lol:
That's probably it, TAM, they just forgot to mention which scale they were using.

I often quote the speed my vehicle will achieve in furlongs per fortnight.
:smilelol5:
:lol:I considered that so I looked up the conversion to Kelvin. I remembered the number 460 but couldn't recall what the relationship was. It's part of the conversion formula. I laughed at myself that I even remembered 460, especially since I can't remember where I put my keys.
by puma guy
Sun Sep 20, 2015 12:49 pm
Forum: Off-Topic
Topic: History Channel Makes a startling discovery.
Replies: 34
Views: 5724

Re: History Channel Makes a startling discovery.

ShootDontTalk wrote:With all due respect, if you're watching the History Channel and expecting to find real history, or anything else accurately portrayed, you'd be better off watching Bugs Bunny. They have, pardon the pun, a pretty sad history of gross inaccuracies.
That's kind of the point of my post. Texas Rising is a perfect example. I stopped watching television decades ago... I keep an eye on it!
by puma guy
Sat Sep 19, 2015 11:31 pm
Forum: Off-Topic
Topic: History Channel Makes a startling discovery.
Replies: 34
Views: 5724

Re: History Channel Makes a startling discovery.

esxmarkc wrote:Although I agree with the OP that the Discover Channel screwed up this one there is an interesting phenomena where you can indeed superheat (heat water above it's boiling point at the current pressure) purified or distilled water in a glass or smooth container given rare circumstances.

Given water without pre-existing bubbles and pure enough that the nucleation threshold is homogeneous throughout the fluid, the first and primary nucleation moment (think the formulation of the very first steam bubble) can require more energy than there is available at the boiling point. Once the first bubble forms and physically disturbs the superheated water it cascades to boiling.

http://www.animations.physics.unsw.edu. ... eating.htm



Gotta love science!

But I'm pretty sure that the Discovery Channel is NOT in any way referring to this phenomena.
Unfortunately my video application is not functioning properly on my laptop. Is this in a microwave? I've seen the demonstrations of water heated past boiling point without vaporization and then flashing when disturbed or a bubble forms. I need a science guy to figure out why my laptop displays videos as a green screen.
by puma guy
Sat Sep 19, 2015 9:56 pm
Forum: Off-Topic
Topic: History Channel Makes a startling discovery.
Replies: 34
Views: 5724

Re: History Channel Makes a startling discovery.

baldeagle wrote:
MONGOOSE wrote:Maybe you guys neeed to Google supercritical water. They indeed mean 300 degrees F.
How all you have to do is explain how a pool of water could be pressurized to the point that the water reaches supercritical levels.
I don't know any way to do that at 14.7 PSIA (sea level) much less in the elevated terrain they were exploring. The maximum sensible temperature of water at sea level is 212°F is what I was taught. Requires 180 BTU's to increase 32°F liquid water temperature to 212°F. It requires another 970 BTU's of heat to reach boiling point i.e. change it's state from liquid to vapor, but even then the sensible heat (measured temperature) of the boiling water is 212°F.

We produced saturated steam at 20PSIG, 125PSIG and 650PSIG in boilers at the refinery at which I was employed. The amount of heat required to produce steam increased relatively to those pressures. We also produced superheated steam. but not superheated/supercritical water from what I recall.
by puma guy
Sat Sep 19, 2015 6:17 pm
Forum: Off-Topic
Topic: History Channel Makes a startling discovery.
Replies: 34
Views: 5724

Re: History Channel Makes a startling discovery.

WildBill wrote:
puma guy wrote:I was watching a History Channel show about Neanderthals. I didn't catch it all but they were showing some pools of water from a volcanic source and said the water temperature was 300 Degrees F. Like new math I guess that's the new physics. "rlol" "rlol" "rlol"
They were undoubtedly scientists so they actually meant 300 degrees C. :mrgreen:
Or maybe in a cave 30000 feet under ground. :mrgreen:
by puma guy
Sat Sep 19, 2015 4:42 pm
Forum: Off-Topic
Topic: History Channel Makes a startling discovery.
Replies: 34
Views: 5724

History Channel Makes a startling discovery.

I was watching a History Channel show about Neanderthals. I didn't catch it all but they were showing some pools of water from a volcanic source and said the water temperature was 300 Degrees F. Like new math I guess that's the new physics. "rlol" "rlol" "rlol"

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