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Is it possible for water to freeze due to radiative cooling when exposed to the black body cloudless night sky even if the ambient air temperature is above freezing?
Wiki User
∙ 12y ago
The short answer is yes. Ever slip on ice when you know the temperature wasn't below freezing?
The air temperature is directly controlled by the amount of infrared radiated away from a surface, blackbody or not. Technically, air temperature is defined as the temperature at 2 meters, so you have to mix the air between 2 meters and right at the surface. So that's where your question comes in - if mechanisms of conduction and convection can't efficiently mix that loss of heat from the surface, then yes, this scenario would play out. Practically, it would have to be only a couple degrees above freezing though.
Note: I have actually observed this. An important condition is very still air so that there is no wind to aid convective warming of the water. It also helps if the air is very dry so that evaporation is encouraged - to add to the cooling of the water. (And, as previously mentioned, it is also necessary to have it close to freezing temperature.)
Wiki User
∙ 12y ago
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How does the temperature change during the freezing of water?
The temperature of the water will not change during a phase transition. If you have seen a graph of temperature versus heat input of water before, you can see that at the freezing point and the boiling point, the temperature remains constant while heat input increases. This is because during the phase transition (such as from solid to liquid), the heat put in will be used to separate the molecules and overcome the electrostatic forces between them, rather than to raise the temperature of the substance. Therefore, at the freezing point, it is possible to have both solid ice and liquid water at the same temperature.
Will freezing a liquid change its volume?
Yes, it is possible.
Do gas have a freezing point?
Not normally.The phases of matter are:-PlasmaGasLiquidSolidThus to go from Gas to Solid you normally have to pass though a liquid phase.However it is possible (under special condition of pressure) to pass from solid to gas and back (eg Dry Ice) by a process called sublimation.Thus normally a gas has a CONDENSATION point and a liquid a FREEZING point unless there is SUBLIMATION.
What is the first degree on the kelvin scale?
Well, what do you mean as in 'what'? 1 degree Kelvin is equal to -457.87 Fahrenheit, or -272.15 Celsius.
Will freezing honey expand or change in volume forcefully enough to break glass?
Very unlikely, if possible.
Was it possible for William shakespeare to find out the temperature?
Not with a thermometer, which had not yet been invented. It was, of course, possible to determine whether the temperature was below freezing or not without the assistance of a thermometer.
Zero celsius is the coldest possible temperature?
No, 0 degrees Celsius is freezing temperature. You can go into the negatives.
Can liquid water can exist at 0 degrees Celsius?
Yes. At 0 °C, water will coexist with ice. This is the commonly-quoted freezing temperature of water, but the EXACT freezing temperature depends on pressure, on the isotope mix of the water, and in general, on its purity. For example, adding some salt makes it possible to lower the freezing temperature.
Is absolute temperature is same like absolute zero?
No, but they are related. Absolute zero is the coldest possible temperature. Absolute temperature is the temperature above this coldest possible temperature - i.e., how much hotter is it than the coldest theoretically possible temperature. Celsius temperature isn't absolute. It starts from the temperature of freezing water, and it needs negative numbers for anything colder than that. Fahrenheit temperature isn't absolute. It says that zero is 32 degrees colder than freezing water, and it needs negative numbers for anything colder than that. Absolute temperature starts from absolute zero. Nothing is colder than that, so absolute temperature is never a negative number.
Difference between absolute zero and absolute temperature?
Freezing is the act/process of freezing something. Freezing point is the temperature at which a liquid substance turns solid. This is due to the slowing down of its molecules due to lack of energy (no heat).
What is the ideal temperature to store fresh harvest vegetable produce in a cold storage room?
I think 1 degree Celsius is ideal. Not freezing, but as cold as possible before freezing. I once asked an organic farmer about what temperature to store some apples I had purchased. The 1 degree answer came from him.
Why celsius scale gives negative temperature?
Temperature in Celsius can be negative. 0 degrees is freezing point in Celsius, so it is possible to get -1, -10 degrees, etc. However, not all temperatures in Celsius are negative.
If the temperature on the moon is so cold than how is it possible that astronauts don't freeze on the moon?
The astronauts wore temperature controlled protective suits. The suits kept them from freezing in the shadows and from burning up in direct sunlight.
Which temperature scales have units of equal size?
Celsius and Kelvin scales have the same unit, but they start at different temperatures. 0 Celsius is the freezing pt of water, but 0 Kelvin is absolute zero (the coldest temperature possible)
What is a catchy title for a science fair project on freezing bubbles?
Are freezing bubbles possible?
How does the temperature change during the freezing of water?
The temperature of the water will not change during a phase transition. If you have seen a graph of temperature versus heat input of water before, you can see that at the freezing point and the boiling point, the temperature remains constant while heat input increases. This is because during the phase transition (such as from solid to liquid), the heat put in will be used to separate the molecules and overcome the electrostatic forces between them, rather than to raise the temperature of the substance. Therefore, at the freezing point, it is possible to have both solid ice and liquid water at the same temperature.
Will freezing a liquid change its volume?
Yes, it is possible.
