Hyperthermia occurs when the body produces or absorbs more heat than it can dissipate. Waves break against the revetments, which dissipate and absorb the energy. The amplifier must dissipate this heat via convection or forced air cooling. They dissipate slowly and linger in the atmosphere long after the airplane has passed. Polar lows dissipate rapidly when they make landfall. Conversely, if the atmosphere is dry, the contrail will dissipate quickly. A variable resistor would dissipate power as heat and acts as a voltage divider. Because the wires were suspended in air, they could dissipate heat well. Purely elastic materials do not dissipate energy (heat) when a load is applied, then removed. Another way to dissipate energy is through electromagnetic radiation. Resistance elements are elements that dissipate energy. Zero-point fluctuations can, and do, contribute towards systems which dissipate energy. Fusion produces neutrons which dissipate energy from the reaction. When the breakup is late, the remnants dissipate rapidly. This means that the transistor can dissipate about 18 watts before it overheats.