Marnie
Frequent Contributor (5K+ posts)
Member # 773
posted
1. I brought an egg to room temperature.
2. I fully charged 2 cell phones.
3. I heated Pure Life water in the microwave to try to reach as close to 98.6 degrees as possible. (This will destroy some minerals.)
4. I put the egg in the water....to try to bring the proteins in the egg as close to our own body temp. as possible.
5. I put the egg in a glass custard cup which was filled with water on a table on our lanai...out of sunlight.
6. The outside temperature was then 86 degrees.
7. I aimed 2 cell phones at the egg in the water in the custard cup.
8. After 1 hour of 2 cell phones transferring 85 decibles, the egg was NOT cooked...at all.
However...it started to storm and our temperature dropped to 78 degrees and the water temperature in which the egg was placed, dropped to the same. Darn!
So...I need to repeat this experiment...on a day when our outside temperature is in the 90's. (Closer to body temperature.) and I may need to heat the Pure Life water accordingly too...letting the water simply sit outside to get warm rather than heating it in the microwave (which destroys the minerals).
What I am trying to do is to mimic what might happen to proteins in OUR mineral-water filled cells...when heated using 2 cell phones at 85 decibels x2.
At 1000 minutes for $100 (x 2 cell phones) = fairly costly experiment.
;-)
But cheaper than a tank of gas!
Posts: 9424 | From Sunshine State | Registered: Mar 2001
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Carol in PA
Frequent Contributor (5K+ posts)
Member # 5338
posted
Marnie, You are aware that this "demonstration" was shown to be a hoax?
Carol
Posts: 6947 | From Lancaster, PA | Registered: Feb 2004
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Marnie
Frequent Contributor (5K+ posts)
Member # 773
posted
Carol...I am the kind of person who believes there is little truth in everything.
Did you know we can capture heat, turn it into sound and then
from sound, generate electricity?
Via a thermoacoustic electric generator.
"ScienceDaily (June 4, 2007) -- University of Utah physicists developed small devices that turn heat into sound and then into electricity.
The technology holds promise for changing waste heat into electricity, harnessing solar energy and cooling computers and radars."
We hope to use them in space travel someday.
But...WE have been doing the same ourselves - using "sound" to generate electric impulses:
"When sound waves hit the eardrum, vibrations are transferred to fluid inside the cochlea.
Moving fluid triggers the movement of tiny projections called stereocilia on hair cells.
When stereocilia move, hair cells respond by
****generating electrical impulses***, which are carried by the auditory nerve to a part of the brain called the cochlear nucleus, and eventually relayed to the auditory cortex.
During this process, the signals are interpreted in a way that allows us to ``hear'' them as sound.
Close exposure to a very loud noise -- an explosion, gunshot or a jet engine -- can literally flatten the stereocilia on hair cells or rupture the cells themselves, causing immediate hearing loss which can be permanent.
But prolonged exposure to noise over 90 decibels -- like city traffic, lawnmowers and loud music -- can be just as damaging."
"When two completely independent sound sources are put in the same room, the resulting sound pressure is not the sum of the individual sound pressures. Instead, the resulting sound power will be the sum of the sound power emitted by each of the two sources."
So in the popcorn experiment...it would be the sum of the 4 cell phones emitting 85 decibels each = 340 dB! Yikes.
"One of the loudest man-made sounds is created by the space shuttle lifting off. It will generate sounds at an incredible 215 dB!!!
The sound is so loud that it would actually cause damage to the launch tower, and as a reflected echo, to the shuttle itself.
To absorb the energy,
huge amounts of water are pumped to the base of the launch pad seconds before takeoff.
The water absorbs the sound, as well as a lot of heat.
When you see video of a shuttle launch, most of the white stuff you see billowing from the launch pad right at takeoff is not smoke... it's steam!"
"Question Is it true that noise pollution can produce some heat in the atmosphere? Please explain..
Answer
Yes it is true.
Heat is transfered in three ways conduction, convection and radiation.
In conduction, for example, if a metal rod end is placed in a fire, the other end will slowly warm up as heat is conducted along the rod.
Heat is in fact vibration of the atoms or molecules in the rod.
The hotter an object is the more and faster its atoms vibrate.
Sound waves are also vibrations of the air (sound cannot travel through a vacuum) so it is actually a form of heat.
But because the wave lengths (vibrations) are so long it is a very low intensity form of heat."
There are many variables that may have entered into debunking the experiment. Distance from the object and temperature and the room barometric pressure affect sound...a LOT.
Note: decibels above 140 will cause immediate deafness...and pain.
Posts: 9424 | From Sunshine State | Registered: Mar 2001
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posted
So in the popcorn experiment...it would be the sum of the 4 cell phones emitting 85 decibels each = 340 dB! Yikes.
You display a profound lack of knowledge as to how this stuff works. If two phones double one phone, and four phones double them, then you'd have 91 decibels, not 340. Logarithmic scales are funny like that ...
Posts: 3 | From central Mass | Registered: Jul 2008
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