The optimal heat level and time period of exposure are not known.

I sense metal fatigue, dangerous heat levels in my bearings.

The best heat level is medium, but some adjustments may be needed to guarantee even browning.

Make sure you melt both with the same heat level and time each.

Although the fires burned more intensely in the draft, the overall heat level was lower and the air cleared.

Anything at that heat level showed up orange on the monitor.

The necessary heat level varies depending on the nature of the molecules that make up the fuel.

The manner in which the police handle a player is now determined by the "heat level" of the player's current car.

If a car is not being used by the player its heat level will slowly lower over time.

But for the majority of grilling, that heat level is overkill.