Is there an absolute maximum temperature? | Science Questions
网页2012年3月25日 · Scientists in Finland have cooled rhodium atoms to a 10th of a billionth of a degree above absolute zero. On the other hand, an absolute maximum temperature would require there to be a limit to the amount of energy you can give to a particle. As far as we know, there is no such limit. Although the speed of light is the universal speed limit ...
What's the highest possible temperature that you can achieve?
网页2006年6月25日 · Answer. There is no highest possible temperature that you can achieve. On a microscopic scale temperature is approximately the amount of energy each atom has. You can have a lowest possible temperature because you can have no energy at all. But you can give as much energy as you like to a particle but it will still just keep getting hotter and ...
The coldest point water can remain a liquid has been calculated
网页2011年11月27日 · After all this work they finally found the theoretical lowest temperature you can cool water to without freezing is -55 celsius. This might seem quite academic, but supercooled water is very important in many types of cloud, and has been discovered there at -40 celcius, and understanding how water behaves at these temperatures will help ...
Does sound travel further in cold weather than warm?
网页2006年10月22日 · Answer. The speed of sound does depend on temperature and it is slower at colder temperatures, so it can sound different. Deep down, sound is the vibration of molecules and if you've got a lower temperature and you …
Why burn up on entering Earth's atmosphere? | Science Questions
网页2011年4月10日 · Answer. Dave - The main reason why things heat up when they hit the Earth's atmosphere is they've got huge amounts of kinetic energy - they're going incredibly fast. When they bash into the Earth's atmosphere, most of the heating is actually because the air they bash into hasn't got time to get out of the way, so the air gets compressed; and ...
Wind Power in the Antarctic | Interviews - The Naked Scientists
网页2010年2月21日 · The highest wind speed that we've measured here at SANAP in the last 7 years was 52 metres/second at a height of 10 meters. Temperature-wise, the colder it gets, the more extreme the wind. At the moment today, the wind speed is around about 7 meters/second and the maximum temperature is -2°C. What is quite interesting when comparing Antarctic ...
A History of Superconductivity | Science Features - The Naked …
网页2006年10月5日 · This theory predicted that the maximum temperature that a superconductor could function at was about 30K (-247°C). This meant that there was somewhat of a shock in 1986 when there a superconductor discovered which became superconducting at 35K and others rapidly developed at 92K (Yittrium Barium Copper Oxide) with the current record set at ...
Why does water expand when it freezes? | Science Questions
网页2009年10月11日 · Usually, when things freeze - in other words turn from a liquid into a solid - they shrink or get smaller.This is because, normally, if you make something hotter, it vibrates more. When it vibrates more, it tends to take up more space, so it tends to expand.So, logically, if you cool something down, then …
When should you refrigerate cooked chicken? - Naked Scientists
网页2019年9月30日 · Paul - As a rule of thumb, cooked food should be refrigerated within 2 hours and eaten within 2 days. Providing that the chicken is thoroughly cooked, it is no riskier to store in terms of food safety than any other meat. Mariana - Hmm… looks like you’re having a bit of a sore throat. Maybe the next gene therapy should be for laryngitis….
What's Rhenium Doing in a Jet Engine? | Science Features
网页2018年1月30日 · In the jet engine, adding as little as 1-3% of rhenium atoms to the turbine blades increases the heat tolerance. The very slowly-moving rhenium helps to keep the microstructure in place, much like a steel frame of a building does, and this allows the turbine section to tolerate the extreme temperature demands placed upon it.