Old English hat “hot, flaming, opposite of cold,” used of the sun or air, of fire, of objects made hot; also “fervent, fierce, intense, excited,” from Proto-Germanic *haita- (source also of Old Saxon and Old Frisian het, Old Norse heitr, Middle Dutch and Dutch heet, German heiß “hot,” Gothic heito “heat of a fever”).

(hē′tĭd) adj. Angry; vehement; impassioned: a heated argument.

heatedly adverb They argued heatedly.

adjective. made hot or hotter; warmed. excited; inflamed; vehement: a heated discussion.

From Middle English hete, from Old English hǣte, hǣtu (“heat, warmth; fervor, ardor”), from Proto-Germanic *haitį̄ (“heat”), from Proto-Indo-European *kayd-, a derived form of *kay- (“heat; hot”).

heat energy, hot, warm, cool, cold, temperature, thermometer, degrees, Celsius, Fahrenheit, movement, transfer, conduction, conductor, insulation, insulator, convection, boiling, heat source, kinetic energy, friction, electrical energy, electrical appliances, chemical energy, burning, sun, equilibrium.

thermal energy

Many forms of energy exist, but they all fall into two basic categories:

• Potential energy.
• Kinetic energy.

Light or visible light is electromagnetic radiation within the portion of the electromagnetic spectrum that is perceived by the human eye.

Radiant energy emitted, reflected, transmitted or received, per unit time. This is sometimes also called “radiant power”.

lofty

• 1’the buildings have lofty towers and spires’ SYNONYMS. tall, high, giant, towering, soaring, sky-high, sky-scraping.
• 2’lofty ideals’ SYNONYMS. noble, exalted, high, high-minded, grand, fine, sublime, elevated, worthy.
• 3’he has obtained a lofty position in Hollywood’ SYNONYMS.
• 4’they looked on with lofty disdain’

Does the Sun produce radiant energy? Yes, the Sun produces a lot of radiant energy, which is transmitted to Earth as light. Plants convert the electromagnetic energy in sunlight into chemical energy for their food, through a process called photosynthesis.

Radiant energy is energy possessed by vibrating particles. Radiant energy is one of many types of energy, where energy is the ability to do work. Radiant energy is transferred in the form of electromagnetic waves, or waves composed of electrical and magnetic properties.

Radiant energy is energy contained in electromagnetic waves. These include visible light, infrared, radio waves, ultraviolet and microwaves.

Radiant energy, also known as electromagnetic radiation (EMR), is energy transmitted without the movement of mass. Practically speaking, this is the energy found in electromagnetic waves, also known as light. Light is made of individual particles called photons, each carrying a small “packet” of energy.

Radiant energy is energy that travels by waves or particles, particularly electromagnetic radiation such as heat or x-rays. An example of radiant energy is the source of energy used in radiation therapy.

It turns out that an object’s kinetic energy increases as the square of its speed. A car moving 40 mph has four times as much kinetic energy as one moving 20 mph, while at 60 mph a car carries nine times as much kinetic energy as at 20 mph. Thus a modest increase in speed can cause a large increase in kinetic energy.

Radiation is energy. It can come from unstable atoms that undergo radioactive decay, or it can be produced by machines. Radiation travels from its source in the form of energy waves or energized particles.

There are four major types of radiation: alpha, beta, neutrons, and electromagnetic waves such as gamma rays.

Alpha rays

Alpha particles

Gamma rays are the most harmful external hazard. Beta particles can partially penetrate skin, causing “beta burns”. Alpha particles cannot penetrate intact skin. Gamma and x-rays can pass through a person damaging cells in their path.

People can be exposed to ionizing radiation under different circumstances, at home or in public places (public exposures), at their workplaces (occupational exposures), or in a medical setting (as are patients, caregivers, and volunteers). Exposure to ionizing radiation can be classified into 3 exposure situations.

Gamma radiation

Radiation

• electromagnetic radiation, such as radio waves, microwaves, infrared, visible light, ultraviolet, x-rays, and gamma radiation (γ)
• particle radiation, such as alpha radiation (α), beta radiation (β), proton radiation and neutron radiation (particles of non-zero rest energy)

There are three main kinds of ionising radiation: alpha particles, which include two protons and two neutrons. beta particles, which are essentially electrons. gamma rays and x-rays, which are pure energy (photons).