You do it, let's say, at 400 degrees Kelvin, where the melting point is at 481 degrees Kelvin.

He knew he had found Lord Kelvin' s unknown source of heat.

The experiments were conducted in an ultra-high vacuum at the low temperature of 10 Kelvin, with the use of liquid helium.

This is what it would usually, solid, liquid, that would be 273 degrees Kelvin.

In the opening scene of 2009' s Star Trek movie reboot, the Federation starship USS Kelvin is under attack by the Romulans.