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Topic: Room temperature

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In the News (Thu 21 Mar 19)

  Room temperature - Wikipedia, the free encyclopedia
Room temperature, in laboratory reports, is taken to be roughly 21–23 degrees Celsius (69-73 degrees Fahrenheit), or 294–296 kelvins.
Researchers choose to study a process outside its natural temperature range when they expect that the answer to their specific question ("What is the product of this enzymatic reaction?") will be the same at room temperature as it would have been had they conducted their experiment at a more naturalistic temperature.
And, of course, the ambient temperature of a room is room temperature.
en.wikipedia.org /wiki/Room_temperature   (570 words)

 Encyclopedia: Room temperature
The kelvin (symbol: K) is the SI unit of temperature, and is one of the seven SI base units.
Temperature is the physical property of a system which underlies the common notions of hot and cold; the material with the higher temperature is said to be hotter.
Science experiments Temperature is the physical property of a system which underlies the common notions of hot and cold; the material with the higher temperature is said to be hotter.
www.nationmaster.com /encyclopedia/Room-temperature   (1511 words)

 Room temperature superconductor - Wikipedia, the free encyclopedia
A room temperature superconductor is material yet to be discovered which would be capable of exhibiting superconducting properties at temperatures above 0°C (273.15 K).
This is of course not strictly speaking "room temperature" (20–25°C), however it can be reached very cheaply even for large machines (for example, meat closets reach this temperature).
Since the discovery of high-temperature superconductors, several materials have been claimed as being room-temperature superconductors.
en.wikipedia.org /wiki/Room_temperature_superconductor   (176 words)

 Room temperature
In laboratory science reports, room temperature is taken to be roughly 21-23 degrees Celsius, 70-74 degrees Fahrenheit, or 294-296 kelvin.
The phenomena that researchers have chosen to study at room temperature may occur in nature in the range of 21-23°C ("ATP consumption in resting cockroaches"), or they may not ("biochemistry of warm-blooded animals").
Experimentalists have an advantage in anticipating aspects of a room-temperature experiment, because the temperature is close to 25°C (77°F, 298K), at which many of the material properties and physical constants in standards tables have been measured (more at standard state).
www.brainyencyclopedia.com /encyclopedia/r/ro/room_temperature.html   (590 words)

 NSLog(@"Erik J. Barzeski"); - QotD: Room Temperature   (Site not responding. Last check: 2007-10-21)
I've always felt that room temperature wasn't a specific amount, but the temperature at which the room currently is, hence its name.
Room temperature is relative to what temperature a person feels comforatable at.
Room temperature should be 68, Im finding it hard to adjust where I work now, they state that room temp is 70-74 and I find myself sweating over 70.
nslog.com /archives/2003/05/27/qotd_room_temperature.php   (701 words)

 Metric System Temperature (kelvin and degree Celsius)
The degree Celsius (°C) scale was devised by dividing the range of temperature between the freezing and boiling temperatures of pure water at standard atmospheric conditions (sea level pressure) into 100 equal parts.
Temperatures on this scale were at one time known as degrees centigrade, however it is no longer correct to use that terminology.
Temperatures on this scale are called kelvins, NOT degrees kelvin, kelvin is not capitalized, and the symbol (capital K) stands alone with no degree symbol.
lamar.colostate.edu /~hillger/temps.htm   (417 words)

 Portable Remote Control for Room Air Conditioning   (Site not responding. Last check: 2007-10-21)
Room air-conditioners are often installed far from the part of a room or office which you may occupy.
In a home setting, a room air conditioner might be located in a window far from an occupied portion of the room, thereby producing an aggravating difficulty in maintaining a stable comfort level in the occupant's immediate room space.
My invention's intent is to utilize electronic circuitry effective as a thermostat that may sense room temperature near an occupant and then send a wireless signal to a receiver that operates a relay to turn an air conditioner or space heater on and off in response to the thermostat settings.
www.savvysite.com /group03/sitefile/patlib/p5839654/sk3p654a.htm   (8307 words)

 Tom Saaristo Room Temperature Foods
Dishes served at room temperature often can be prepped in advance and then taken out of the fridge about half an hour before you serve them, which sometimes is the length of time between when I get a client call and when I personally take that first forkful.
Room temperature meals are often great for picnics, good for parties and handy on hot days when you don't want to eat anything hot anyway.Look for room-temperature foods around the globe.
These foods taste just as good on the dining room table when you return to your plate after answering the phone, cleaning up and retrieving condiments from the refrigerator.
tomsaaristo.com /roomtemp.html   (809 words)

 What is 'Room Temperature'? .........   (Site not responding. Last check: 2007-10-21)
Room temperature is usually considered to be about 72° F, or 22° C.
If the room air temperature were the same temperature as our bodies (98.6° F, or 37° C), we wouldn't be able to radiate away this heat.
At a room temperature of about 72° F, or 22° C, and while wearing the normal amount of clothing, enough heat is able to radiate away from our bodies where skin is exposed (C), through our faces and ears (B), and through the clothing itself (A), to keep us feeling comfortable.
www.worsleyschool.net /science/files/room/temperature.html   (252 words)

 Maximum room temperature   (Site not responding. Last check: 2007-10-21)
If the conductivity of the heatsink is high, and the conductivity of the interface is also high, a small temperature difference will cause a lot of heat to flow from the hotter to the cooler.
Cooling down the room air temperature 10C should reduce the operating temperature of your CPU by very close to 10C.
An additional risk for even fairly short periods of high temperature operation is that hard disks are made of metal that expands when heated.
www.beowulf.org /archive/2002-April/006845.html   (714 words)

 Amazon.ca: Room Temperature: Books   (Site not responding. Last check: 2007-10-21)
Room Temperature is certainly about a father and his child, but there is so much more.
In "Room Temperature" we find the antidote, along with his other novels, to a modern world obsessed with speed, impersonal technology and the summational catchphrase "whatever".
Room Temperature is touching in a way that none of his other books are.
www.amazon.ca /exec/obidos/ASIN/0679734406   (917 words)

 Room Temperature: Information on Temperature
It cures at room temperature to 75-80 Shore D hardness, has 45 min pot life, usable temperature range of -40 to 130°C, and dielectric strength of 450 V/mil.
To be served at room temperature, or chilled.
Of course with a room temperature reaching 55C, the measured temperature on the disk surface will be higher than 55C; but 87C is probably affecting the lifespan of the HD.
roomtemperature.mouetemperature.com   (1909 words)

 Recommended Server Room Temperature
Even if everything is working the temperature may fluctuate during the day, from season to season, and there is always the possibility of localized hot-spots around equipment giving off lots of heat.
The server room door being opened all of the time lets warmer air into the server room thus necessitating the air conditioning system to be turned up high.
You need to monitor the temperature in your server room all of the time, especially at night and weekends when nobody is around.
www.openxtra.co.uk /articles/recommended-server-room-temperature.php   (723 words)

 The quest for Superconduction at room temperature - Are diamonds the answer?
Although other materials have since been found, which are also superconducting, the maximum temperature at which this effect could be generated was, for many years, only 23 K. In 1986 excitement ensued when certain copper-oxide ceramics were discovered which superconduct at higher temperatures [2].
The temperature quickly rocketed from 30 to 150 K, where it has again reached a ceiling; still well below the 300 K required for room temperature operation.
However, my present studies, and recent experimental results, have now produced compelling evidence that it is possible to generate a superconducting phase, at room, and higher temperatures, consisting entirely of electrons.
www.scienceinafrica.co.za /2002/august/diamond.htm   (1752 words)

 Physics News Update 730
Room temperature liquid sodium can occur but only under pressures of a million atmospheres.
What happens is this: With zero pressure applied, sodium melts at a temperature of 371 K. As pressure is added, the melting temperature goes up too, up to 1000 K at a pressure of 30 giga-pascals (30 GPa), or about 300,000 atm.
According to Carnegie researcher Eugene Gregoryanz (e.gregoryanz@gl.ciw.edu), at a pressure of a million atmospheres his sodium sample melts at room temperature.
www.aip.org /pnu/2005/split/730-1.html   (269 words)

 Cold Packs at Room Temperature   (Site not responding. Last check: 2007-10-21)
So one needs a pack medium that melts at a low temperature, has the highest possible heat of fusion (melting), and is non-toxic.
It too is liquid at room temperature because it is all melted.
and when the freezer chest reaches room temperature there is no sign of the refrigerant remaining.
www.newton.dep.anl.gov /askasci/chem03/chem03120.htm   (219 words)

 [No title]
The stated cure temperature and T}{\sub g}{ for the Dow 332/T403-like resin system were given by Toray as 70° C and 75-78° C respectively.
The rings that were exposed to T-T were removed from the oven, allowed to cool down to room temperature, instrumented with strain gages, and then sliced open.
Loads were chosen to strain the beams to near 300 }{\f3 \'6d\'65}{ at room temperature (equal to material Poisson-ratio times maximum measured hoop strain in test one).
www.esm.psu.edu /bakis-c3alpha1/reports/relaxation/relax60.doc   (437 words)

 Computer Room Temperature
Whilst the computer room is rarely a pleasant environment in which to work, sometimes it is necessary to carry out essential maintenance.
Whilst the temperature of your computer room is important, the temperature that really matters is inside the computer case where all of the electrical components reside.
It is possible to have a temperature within the operating range of the computers in most of the computer room but still have one or more computers operating outside of their recommended temperature range.
www.openxtra.co.uk /articles/computer-room-temperature.php   (822 words)

 LIVING : General Food Info : Cooking Hints from Food Network Kitchens: Room Temperature Eggs : DIY Network
Answer: Using eggs at room temperature, especially in baking recipes such as meringues or Italian butter cream, is preferable for several reasons.
At room temperature, they will beat faster and result in a greater increase in volume, giving a finer texture.
The most ideal way to bring eggs to room temperature is to do it ahead of time: Remove the eggs from the refrigerator and let them sit, covered at room temperature for no longer than 30 minutes.
www.diynet.com /diy/lc_general_food_info/article/0,2041,DIY_14005_2278476,00.html   (615 words)

 Room Temperature Encyclopedia Article, Description, History and Biography @ LocalColorArt.Encyclopedia.com   (Site not responding. Last check: 2007-10-21)
Looking For room temperature - Find room temperature and more at Lycos Search.
Find room temperature - Your relevant result is a click away!
Room temperature, in laboratory reports, is taken to be roughly 21–23 degrees Celsius (72 degrees Fahrenheit), or 294–296 kelvins.
encyclopedia.localcolorart.com /encyclopedia/Room_temperature   (729 words)

 Room Temperature Boiler   (Site not responding. Last check: 2007-10-21)
The room temperature boiler is a senior mechanical engineering project currently being designed by Nader Al-Khatib and myself.
The room temperature boiler reduces the pressure in the chamber until the liquid can boil without adding any heat.
For this boiling to begin we need a temperature difference between the wall and the saturation temperature of approximately 5 degrees C. To maintain the boiling effect for the specified time of 15 seconds, a sufficient amount of heat must be allowed to transfer into the base of the chamber.
www.ecst.csuchico.edu /~tsbvb/project.html   (455 words)

 Materials Chemistry - Superconductors
At ordinary temperatures, metals have some resistance to the flow of electrons, due to the vibration of the atoms which scatter the electrons.
As the temperature is lowered, the atoms vibrate less and the resistance declines smoothly, until the material’s critical temperature, Tc, is reached.
The voltage drop, V=IR, along the pellet due to the pellet’s resistance, R, at room temperature is measured with the volt meter.
imr.chem.binghamton.edu /labs/super/superc.html   (2059 words)

 Look in right places for room-temperature superconductors, says Geballe
For widespread use, such as conducting electricity in homes or offices, superconductors will need to work at room temperature - about 68 degrees F. Geballe believes a technological breakthrough is possible that would bring superconductors out of laboratories and into society's mainstream.
Before 1985, scientists wanted to produce materials that could superconduct at the temperature of liquid nitrogen (minus 321 F) which was cheaper than liquid helium and more practical for commercial applications.
To convert to degrees Kelvin, a unit used by superconductor scientists because it is the only scale in which temperature is directly proportional to kinetic energy, add 273 to the Celsius temperature.
www.stanford.edu /dept/news/pr/91/911205Arc1030.html   (962 words)

 Boiling at Room Temperature   (Site not responding. Last check: 2007-10-21)
Water can boil at room temperature if the pressure is reduced enough (a vacuum means zero pressure).
The boiling point at the top of a mountain is lower than it is at the bottom, because the air pressure is lower at the top.
The reason is that at room temperature, water molecules are constantly going into the air as vapor and moving back into the liquid water.
www.newton.dep.anl.gov /askasci/chem99/chem99558.htm   (432 words)

 Bell labs demonstrates room-temperature, high-power quantum cascade lasers   (Site not responding. Last check: 2007-10-21)
Their peak pulsed optical power is 200 milliwatts at room temperature and 100 milliwatts at 127 Fahrenheit (50 Celsius), with a slope efficiency of 106 milliwatts and 75 milliwatts per amp, respectively.
Under these conditions, the measured average power at room temperature is 7 milliwatts.
The threshold current density at room temperature is 8600 amps per square centimeter.
www.lucent.com /press/0696/960611.blb.html   (1491 words)

 Room Temperature Ionic Liquids
The Room Temperature Ionic Liquid Community Database is maintained at Queen's University of Northern Ireland, URL: http://www.ch.qub.ac.uk/resources/ionic/ionic.html
Room temperature ionic liquids are liquids that are composed entirely of ions and in this sense alone resemble the ionic melts which may be produced by heating normal metallic salts such as sodium chloride to high temperature (e.g., NaCl to over 800oC).
They are liquid at room temperature, but in fact have an enormous liquid range of 300oC which is larger than that of water and offers the potential for considerable kinetic control of extractive processes.
bama.ua.edu /~rdrogers/webdocs/ionicliquids.html   (576 words)

 Room-Temperature SC in Nanotubes?   (Site not responding. Last check: 2007-10-21)
A means of conducting electricity without any losses whatsoever at temperatures hundreds of degrees higher than what is required of today's "warm superconductors" - the copper perovskites.
It is well known that copper-based perovskite oxides rightly enjoy consensus as high-temperature superconductors on the basis of two signatures: Meissner effect and zero resistance.
I was also told in the conference that a Russian group has been successful in preparing large bundles of MWNTs that exhibit a large Meissner effect at room temperature.
superconductors.org /roomnano.htm   (718 words)

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