Hot things give off infrared radiation, which is a form of electromagnetic radiation that lies within the infrared region of the electromagnetic spectrum. This type of radiation is invisible to the human eye but can be felt as heat on the skin.
No, all objects above absolute zero give out radiation. However, very hot objects emit more radiation and at higher frequencies than cooler objects.
Warm is a rather vague term. If it means neither cold enough to freeze your flesh nor hot enough to burn it, the answer is infrared.
A hot object gives off more radiation than a cold object. The amount of radiation emitted by an object is directly related to its temperature, according to the Stefan-Boltzmann law. The hotter an object is, the more energy it emits as radiation.
A hot iron emits infrared radiation, which is a form of electromagnetic radiation that is invisible to the human eye but can be felt as heat.
Generally, yes. For example, a hot coil may emit infrared or even red light, and hot iron glows. When cool, however, they do not emit light. The reason is that electrons are given more energy from the heat, so they raise in their location from the atom, and when they return to a stable location they give off light.
the lamp gets hot
Yes
No, all objects above absolute zero give out radiation. However, very hot objects emit more radiation and at higher frequencies than cooler objects.
Warm is a rather vague term. If it means neither cold enough to freeze your flesh nor hot enough to burn it, the answer is infrared.
A hot object gives off more radiation than a cold object. The amount of radiation emitted by an object is directly related to its temperature, according to the Stefan-Boltzmann law. The hotter an object is, the more energy it emits as radiation.
vibrating molecules relase infra-red radiation (that's hot things)
Hot gases of any kind emit electromagnetic radiation.
vibrating molecules relase infra-red radiation (that's hot things)
Electromagnetic radiation in the form of thermal radiation is emitted as any substance, including iron, gets hot.
A thermos keeps things hot by using a vacuum-sealed layer of insulation between the inner and outer walls. This insulation prevents heat transfer through conduction, convection, and radiation, keeping the contents hot for an extended period of time. Additionally, the reflective coating on the inner surface helps to minimize heat loss through radiation.
Electromagnetic radiation in the form of thermal radiation is emitted as any substance, including iron, gets hot.
A hot iron emits infrared radiation, which is a form of electromagnetic radiation that is invisible to the human eye but can be felt as heat.