#temperature
Questions about “temperature”.
5 articles
Why does road salt melt ice?
On snowy mornings, roads and bridges are often scattered with white grains. Why does salt make ice melt? And why does it work worse the colder it gets?
What happens if you light a candle in space?
A candle flame always points upward. So what shape would it take in space, where there is no up or down? Astronauts have actually tried it.
What is the white fog from dry ice?
Drop the dry ice from a cake box into water and white smoke comes billowing out. It certainly looks like a cloud of carbon dioxide. But is it?
Why is ice slippery?
Almost everyone has lost their footing on an icy path. Yet the reason behind something so familiar is a puzzle physicists have argued over for more than 170 years.
Is there an upper limit to temperature?
Cold has a floor, a point below which nothing can go. But what about heat? The hottest thing humans have made was over 300,000 times hotter than the Sun’s core.