Suppose you have a flashlight in your hand. Describe the transformations of energy that take place to allow that flashlight to give off light. Be sure to include where waste energy is given off.
The amount of energy that is emitted from the light source is based on the temperature of the object. Radiation is a form of transferring heat that does not require any direct physical contact between the source of heat and the object receiving the heat. The electromagnetic form of radiation is called, infrared radiation, which is that passing of heat in empty space. No mass is exchanged and no medium is required during this process. Common examples of radiation found in everyday life is the sun rays giving of heat that effects the organisms that receives the energy of them indirectly or heat released from light bulb.
Light is said to be the portion of the electromagnetic spectrum that all people can see. Many people call this portion visible light, and know that visible light has a range of many colors. These main colors are usually said to be red, orange, blue, indigo, violet, yellow, and green. The colors of different objects are determined by the interaction between light and the electrons of the atoms that make up an object. The object is made up of specific wavelengths of white light unique to the object, and it absorbs the light according to its wavelengths. Molecules have many states, two of these states, are states where the electron is excited and neutral when it is originally found. Molecules and atoms can only absorb light when the energy of a photon matches the energy difference between these two states.
Consumers have many different light bulb options when choosing light fixtures. LED lights are quickly becoming one of the most popular choices. There are many great benefits to this light, causing more people to purchase LED floor lamps over CFL or incandescent lamps.
Our visual and nonvisual sensory system is used on a daily basis as a reflex to intake information from our surrounding environment. Although it seems simple when operating your eyes to see, your ears to hear, or your hands to touch there are detailed mechanisms that occur when in use. Our sensory organs are composed of specialized cells called receptors that allow signals to the nervous system, which are converted from environmental energies. We detect frequencies of radiated energies known as the electromagnetic spectrum, which we familiarly call light. The visibilities of certain frequencies vary depending on the span of their wavelength. For instance, we are able to see light because our receptors respond to wavelengths from 400 to 700 nanometers, however x-rays, gamma rays, ultraviolet waves, radio waves, etc are invisible to humans due to their very low or high wavelength.
The process of converting light energy into electricity or heat is called photovoltaics. According to Hosenuzzaman, “photovoltaics is the direct conversion system that converts sunlight into electricity without the help of machines or mobile devices.” Solar radiation is converted to electricity in materials that are called semiconductors. The material that is
Solar energy is a renewable energy source meaning that the energy is generated by the sun. The way that solar produces energy is by the sun's rays that reach earth and converts into heat and electricity. Its transported by photovoltaic ( pv devices ) and solar thermal electric power plants. Examples of this energy source is : solar powered window blinds, bulbs, refrigerators, radios, calculators,
Have you ever had a family member murdered? You probably felt extremely sad and depressed, maybe even mad. Well imagine 6 million murders. This is what we call the Holocaust. One of the first concentration camps was established in Germany. It was soon after Hitler became chancellor in 1933. After a couple weeks of Nazi’s forming into power, the SS(Protection Squad), elite guards, the police, and civilian authorities organized multiple concentration(detention) camps to follow Nazi Policy. There soon were camps all over the land of Germany. Bigger cities had bigger camps, smaller cities had smaller camps. They were all still camps, though. SS units wore skull and bones symbols on their caps to identify. Inside camps were concrete boxes, gas chambers, side by side, deadly. People disposed in each. Packed into a box, naked, rubbing with other naked people. Stepping in the mud barefoot constantly. Eating bread constantly and not very often. Dead corpse’s just lying around, being picked up as food is being handed out at the same exact time. Your toilet was also your bowl to eat out of, and to clean the feces off of it, you used your urine. Your body was constantly dirty. And then the thought of depression? It was just terrible inside these camps.
Light is electromagnetic radiation, energy shown as a wave or a particle, that can be visually perceived as radiant energy.1 Light is measured by the wavelength and frequency. A wavelength is the distance from any point on one wave to the same point on the next wave and shown by lambda, λ.2 The different types of light begins with gamma rays and proceed to radio waves when increasing wavelengths are compared. Frequency is the number of crests per second and is expressed in hertz and shown as v. The pattern associated with light is indirectly related to the wavelength. The variability of light starting with gamma rays and ending with radio waves is connected by decreasing frequency. Frequency is independent of the wavelength and are both
Light is a form of energy that behaves in some ways like waves. Light waves have a range of wavelengths. A wavelength is the distance between any point on one wave and the corresponding point on the next wave. Different wavelengths of light appear to us as different colors. Light that contains all wavelengths in the same proportions as sunlight appears white. See LIGHT.
Long life time stands out as the number one benefit of LED lights. LED bulbs and diodes have an outstanding operational life time expectation of up to 100.000 hours. This is 11 years of continuous operation, or 22 years of 50% operation.
The heat and light of the sun come from the nuclear reactions of hydrogen, carbon, nitrogen, and helium. So the sun is just one great big atom smashing, gas creating, nuclear furnace that gives off much appreciated energy. But this is not all that happens on the sun’s surface, some exciting stuff does happen up there every once in a while.
There are no definite forms of energy since possibilities of new forms of energy are limitless. However, the various forms of energy in physical science include thermal, chemical, electric, radiant, nuclear, magnetic, elastic, sound, mechanical, and luminous energies (Foland 13). Thermal energy or heat is the energy in random motion of particles. Chemical energy refers to the energy from the aggregate of positioning of electrons and protons. Radiant energy is the energy of electromagnetic radiation while nuclear energy and electric potential energy is energy emanating from nuclear fission and electrical processes respectively. Sound is a form of mechanical vibration, which propagates through any mechanical medium. It is closely related to the ability of the human ear to perceive noise.