Is 0 degrees Celsius - cold or hot?

Answer 1

This is the temperature at which water freezes. Hot and cold are relative terms, so you be the judge.

Related Information:

In physics the 0 degree is just a name for human use. In fact the zero degree Celsius and even many minus degrees Celsius are only descriptions of the state of the thermodynamic temperature and energy still remaining within a mass. This means that even a minus degree describes the presence of a low thermodynamic energy that is still present in the mass, not a state of energy absence. Only at the absolute zero degree which equals -237 Celsius , the energy inside the mass (the temperature inside a mass) reaches it's lowest possible point , that is absolute zero. So the zero degree Celsius is actually not the real zero degree. That is why physicists use the Kelvin scale more than the Celsius scale.

On the other side, In Biology, and human sensitivity of cold temperature, it is still unknown whether the neurons contribute in the detection of intense cold. That means it's possible that the human being will not feel coldness in very cold temperatures ,because the water inside the neurons starts to freeze when temperatures reach zero degrees Celsius and below it, making the possibility of stimuli conduction to the brain much harder. That is why we don't feel much cold. That means if a large part of our skin reaches 0 degrees Celsius we might not feel coldness ,but that is not possible in reality because our bodies will keep generating heat to regain the normal body temperature at 37 Celsius and the skin will be kept warm at least until death which the only possible state were the neurons will reach zero degree without a resistance from the body. Generally in very cold stimuli it was found that tactile sensibilities deteriorate while pain perception persists. That means we will not feel any touch ,but we will feel the pain that is in the form of coldness.

Answer 2

Very cold.