This category is for questions about the various units and conversions of temperature, as well as the freezing point and boiling point of elements and compounds.
Asked in Temperature
How do you convert Fahrenheit to Celsius?
Use this basic formula: F = 9/5 C + 32 Temperature Fahrenheit = (9/5 x Temperature Celsius) + 32 The reverse formula is C = 5/9 (F - 32) Temperature Celsius = 5/9 (Temperature Fahrenheit - 32) Another formula: °C = (°F - 32)/1.8 °F = (1.8 x °C) + 32 Another method: F to C: Deduct 32, then multiply by 5, then divide by 9 C to F: Multiply by 9, then divide by 5, then add 32 Use this equation to convert degrees Fahrenheit (ºF) to degrees Celsius/Centigrade (ºC): [°C] = ([°F] - 32) × 0.556 °Celsius (or °Centigrade) to °Fahrenheit: [°F] = [°C] × 1.8 + 32
What is the hottest air temperature ever recorded on earth?
The world's highest recorded air temperature is officially recognized by the World Meteorological Organization as 134°F (57.6°C) recorded at Death Valley, California, USA on 10 July 1913. Note that this is in recorded history. Higher temperatures have occurred, of course, at different times during the 4.55 billion years of Earth's history. Related Information: El Azizia, Libya, held this record for 90 years, after recording a temperature of 136°F (58°C) on 13 September 1922. It was coincidentally also on 13 September of 2012 that this record was stripped by the World Meteorological Organization after a team of experts determined that there were enough questions surrounding this measurement that this temperature probably did not occur. The temperature had been suspect in atmospheric science circles for a number of reasons. One being that the time of year is inconsistent with such a high reading. Also, the type and exposure of the measuring instruments cast doubt on the accuracy of the data. However, other temperatures in the same general area approach that maximum, especially in the cloudless southern Sahara, far from the moderating effects of water. Several links are provided below for more information on this process. Other Earth Temperature Highs: The modern, most reliably recorded air temperature in the world was 129.2°F (54.0°C) at Death Valley on 30 June 2013. The highest naturally occurring temperature (at Earth's core) is higher than the melting point of iron and is estimated to be approximately 5000°C. The highest temperature ever created in a laboratory experiment: Scientists, using the Z machine, have produced plasma at temperatures of more than 2 billion degrees Kelvin (3.6 billion degrees F) at Sandia National Laboratories, located near Albuquerque New Mexico. Dasht-e Lut, a desert in southeastern Iran, was identified as having the hottest surface temperature (not air temperature) of 70.7 degrees C (159 degrees F) This was only during the years of study in 2004 and 2005 by MODIS, which is a satellite remote sensor, mounted on NASA satellites Aqua and Terra. Caveats to the Above: Modern measuring methods, instruments, and techniques are more sophisticated and standardized today. Example: The World Meteorological Organization, recommends that air temperatures be measured at a height of 1.25 to 2 meters (which is approximately 4 feet, 1.2 inches to 6 feet, 6.7 inches) above ground level. The most likely places on Earth for record high temperatures are in depressions in desert regions, especially in areas below sea level. The Dallol (Danakil) Depression in Africa (Ethiopia), Death Valley in USA, and the area around Lake Eyre in Australia are likely candidates. However, the Gobi Desert's temperatures, while far from any ocean, are mitigated by altitude. The Dallol Depression had a weather station for a short while (only a few years). It was run by a mining company, and wasn't there long enough to measure an extreme maximum to beat the Libyan record. It did however, measure very high mean average temperatures while it operated. The thing to remember about very hot places is that data is sparse. This is because very few people with high levels of technology stay in these places for long. The environment of the Dallol Depression is hostile to human life. 135 134.6
What is 375 degrees Fahrenheit in Celsius?
375 degrees Fahrenheit is about 190.56 degrees Celsius. Temperature is easy to convert from Fahrenheit to Celsius yourself. You can use the formula Tc = (5/9)*(Tf-32) where Tc = temperature in degrees Celsius, Tf = temperature in degrees Fahrenheit. 375 F is 191 C. 375°F = 190.6°C (375°F - 32) multiplied by 5/9 = 190.6°C 375 degree Fahrenheit = 190.5555556 degree Celsius.
Asked in Temperature, Planet Neptune
What are the high and low temperatures of Neptune?
Community Answer 1 This is a monstrously difficult question because Neptune is composed mostly of gas with a small core of rock. It has been estimated that the temperature in the core is on the order of 7,000 °C, which is comparable to Earth's core or the surface of the Sun. The mean atmospheric temperature on Neptune is as low as 218 °C (55.1 K) at the cloud tops and about -200 °C (72 K) at the pressure level equal to 1 Earth atmosphere. Compare this to Uranus, which is a bit smaller but is closer to the sun. Uranus is a chilly -224 °C (49 K). Neptune is a long, long way from the sun, and very little energy gets there. But because it is as "warm" as it is, it is thought to have a core that is still generating heat. That leaves us to make calculations and make an assessment as to why things are as we see them. We can figure out the amount of light Neptune gets, look at how much is reflected and how much is absorbed, and then look at its temperature. Some "extra heat" must be coming from somewhere, and the core is thought to be generating it. We really can't come up with a "surface temperature" per se for Neptune because of its structure. Wikipedia has more information, including a cutaway drawing of Neptune so you can see "into" this gas giant. ____________________________ Community Answer 2 Average of -373 Fahrenheit/-225 Celsius ____________________________ Community Answer 3 about -225 degrees Celsius and -375 degrees f
Asked in Antarctica, Temperature
What is the maximum temperature in Antarctica and when does it occur?
Asked in Temperature
A swimming pool at 40 degrees is hotter than a cup of water at 40 degrees?
Asked in Biology, Temperature, Circuits
Why does absorption of a membrane increase with temperature?
This is a very simple question with rather a complication set of answers. Movement of some molecules or substances across a membrane only increases between the temperatures of 1 to 37 degrees Celsius (in most organism/cellular systems). At temp. greater than 37 Celsius the membrane proteins involved in transport become denatured. One has to consider the main processes of movement of substances across a membrane i.e ranging from passive diffusion and osmosis and including active transport systems and end/exocytosis etc.
Asked in Science, Physics, Temperature
What instrument measures temperature?
Most commonly, a thermometer. Related Information: Thermometers are used to measure the increase or decrease in the temperature of a system as it gains or loses internal energy. An alcohol-in-glass thermometer has been the most common personal instrument used to measure temperature. Mercury thermometers are still around but are no longer offered for sale. Today, digital devices are available that scan the forehead or ear. Some other devices used to measure temperature are: Radiation pyrometer, for extremely high temperatures; Glass thermometer: mercury or alcohol; Thermocouple; Thermistor (thermal resistor) Bimetallic strip; Bimetallic spiral; Platinum resistance thermometer (a resistance detector); Examples: A mercury in glass thermometer uses mercury liquid contained within its glass structure to be subjected to heat. the heat causes the mercury fluid to expand along the glass tube and the total amount of expansion can be seen as a measure along the accurate scale of indication. This is a direct indication of the effects of temperature. A more complex method of measuring temperature could be a thermocouple measuring device. A thermocouple consists of 2 dissimilar types of metal materials in the form of wires , which are joined at 1 end by weld/ fusion. this single joined end is called the hot junction. The other end of the 2 wires are then terminated at separate junctions; as in a electronic terminal block. This end of the 2 wires can be called the cold junction. For most accurate temperature measure, I think temperature sensor is the first choice.
What are normal body parameters?
Premature: Heart rate=120-170bpm Respiratory Rate=40-70 Blood Pressure=55-75/35-45 0-3 months: Heart rate=100-150bpm Respiratory Rate=35-55 Blood Pressure=65-85/45-55 3-6 months: Heart Rate=90-120bpm Respiratory Rate=30-45 Blood Pressure=70-90/50-65 6-12 months:Heart Rate=80-120bpm Respiratory Rate=25-40 Blood Pressure=80-100/55-65 1-3 years: Heart rate=70-110 Respiratory rate=20-30 Blood Pressure=90-105/55-70 3-6 years: Heart rate=65-110bpm Respiratory rate=20-30 Blood Pressure=95-110/60-75 6-12 years: Heart Rate=60-95bpm Respiratory rate=14-22 Blood pressure=100-120/60-75 12-18 years: Heart Rate=55-85 Respiratory rate=12-18 Blood Pressure= 110-135/65-85 Heart rate: 50-100 beats per minute, depending on physical age and conditioning. Respiratory rate: 12 breaths per minute Blood Pressure: 120/80mmHg but this is seen to rise as people get older due to increased arterial resistance.
Asked in Math and Arithmetic, Temperature
How do you derive the conversion of temperature?
First thing is first, defining the different scales, their basis. Im not sure on the sciency specifics of the definition... but on the Celsius, or Centigrade scale, 0 degrees is defined something along the lines of "freezing point of water". Im not sure at what pressure or purity, but essentially the freezing point. Simiarly, 100 degrees is defined to be the boiling point of water. These are definition. They set the positions of certain particular events, and the distance in between. Namely, 0 is freezing water, 100 is boiling water, and there is a 100 degree gap between the two. On the Fahrenheit scale... oh golly... 0 degrees has something to do with the lowest temperature a salt-water mixture can reach before it freezes. 100 F is supposed to be the average human body temperature... (unfortunately, the early statistics were off by a little). Thus, there is also a 100 degree gap between those two events. Okay... how do you derive the conversion? If you look on a thermometer properly guaged in celsius and Fahrenheit degrees in accordance with their definition... you will notice two things... One, you will notice that there are far more tack marks on the Fahrenheit side... the markings for each degree is closer together than the markings on the Celsius side. For each Celsius degree, there is about 1.8 (or 9/5) Fahrenheit degrees. Or, for ever Fahrenheit degree there is about 5/9 (0.555...) Celsius degrees. This is because the actual temperature difference (in terms of actual heat energy) between events separated by 100 degrees is... is closer together in Fahrenheit than in Celsius. Their associated definitions place these events at different energy levels... but they both have a 100 degree gap on their respective scales. In Celsius, the distance between events is still 100... but the difference in energy level is far greater. The other thing you will notice is that a 0 on one scale is not at the same spot as a 0 on the other scale. The definition of zero in Fahrenheit is not the same as the definition in celsius... and so zero is placed at a particular energy level too. So not only are their zeros not in the same spot (The zero on the celsius scale is equivalent to the 32 on the Fahrenheit scale), but there are more Fahrenheit degrees in a given change in heat. The conversion is then: (F-32) 5/9 = C (9/5)C + 32 = F I hope that answers your question.
Asked in Chemistry, Clouds, Temperature
What is the boiling point of hydrogen gas at STP?
1) Hydrogen GAS does not boil, simply because a gas is beyond the boiling stage. 2) STP (Standard Temperature and Pressure) is a set variable. Therefore, this question is syntactically incorrect, because you are asking: What is the boiling point of 'substance' at X°C and X psi, in which case you can't answer because of the already given temperature. --------------------------------------------------------------------------------------------------- Just for two other ways that are similar to your question that can be answered are... Q: What is the boiling point of hydrogen at SP? A: Roughly 20K, yea really cold. or... Q: Does hydrogen boil at STP? A: No... ----------------------- The boiling point of liquid hydrogen is - 252,87 0C (or 20,28 K) but of course not at STP !