Controversy On Light

Classical physics failed to provide an explanation for the change in color of an object that accompanies temperature change and why objects glow when they get hot. This motivated Max Planck to experiment and attempt to find the reason for these phenomena. Later, Planck would discover that he was studying black-body radiation, which describes radiation that comes from a completely black surface. Since black does not reflect or emit light, it only can become colored by the addition of heat. Planck observed this, along with a change in the way physicists viewed electrons. Previously, it was believed that excited atoms began to oscillate and radiate energy continuously until stopping. Planck revisited and changed his standards to the belief

B. Sir Isaac Newton used prisms to show that sunlight was made up of all the colors of the rainbow. This proved that the ancient Greeks ideas about light were wrong.

Go online and search the word “light”. What’s seen there? 4,270,000,000 results of a boat-load of definitions and websites and most likely the sun, right? Slightly exciting, but the real magic happens when you click on images. There are dazzling pictures of space, glowing fires, destructing lightning bolts, and vibrant smiles on faces. Instead of asking what is seen, ask what is felt. One may feel many emotions: happiness, amazement, curiosity and much more. Despite the feeling though, it’s impressing. Not impressing as in admiration or respect, although that can be felt, but as in making an everlasting mark.

Light waves are a form of electromagnetic waves, which consist of patterns of electric and magnetic energy. The visible spectrum is only a small part of the electromagnetic spectrum-the

When light is absorbed the electrons get excited and go into a higher energy level, so it move much more freely. This produces an electrical

Light is a type of energy. Light behaves like a wave because it acts as a disturbance in the magnetic and electric field of space. Light can behave as a particle, because it sends all its energy to one place. A particle of light is called a photon. Photons can be absorbed into objects, bounce

Light can be produced in many different ways, including incandescence, phosphorescence, and fluorescence (Gunderman 1). Incandescence is when heat makes an object release light, like the filament in a light bulb. Phosphorescence is when a material absorbs energy and then releases it slowly over time, like glow-in-the-dark toys. Fluorescence is when a material absorbs energy and releases it quickly as light (Gunderman 1). Fluorescence is the process used in glow sticks (Science Fair Projects 1). The fluorescent dye in this experiment’s glow sticks released yellow light. Different color glow sticks are made with different dyes (Harris 2).

Radiation The combined process of emission, transmission, and absorption of heat energy traveling through electromagnetic waves from an area of higher heat energy to an area of lower heat energy. A good example is the transfer of solar heat from the sun to the earth. The heat energy is moved through waves from an area of higher temperature (sun) to an area of lower temperature (earth).

As Einstein got older, he got smarter. By 1914, he was a professor and studied light, and he had a theory that light bends as it travels. Right away the media was aware, and Albert had to deny multiple publicity shots. After about two years of research, he finally caught light bending

Numerous metals and different substances radiate splendid shades of obvious light when they are warmed. The colors originate from electrons moving between energy levels. The energy gaps between their electron shells relate with the energy of the colour they give off. so the energy of every colour of light matches the energy gaps between electron shells in different atoms. Electrons are orchestrated into energy levels.

Three throries floated around in the 17th century. The first suggested that the eye sent out something which then registered the world around it. The second advocated that objects emitted something which hit the eye. The third adviesed that a medium between the eye and the environment around it changed between the object and the eye which allowed for sight. Based on the third theory, Christiaan stated that light travled through a recherché substance called luminiferous ether. Supposedly, the waves vibrated the ether as they traveled form the pobject to the eye. With this as his hypothosis, Christiaan founded the lwas of reflection and refraction. Although his calculations remain correct, no such ether exists. His theory was quickly rejected by his college Isaac Newton, who believed that light is composed of several small bodies moving. Today, light is known to have attributes of both particles and

For centuries people have questioned if light is a particle or a wave. In fact in the late sixteen hundreds newton stated that light is a particle. Also at the same time period a Dutch physics by the name of Christiaan Huygens claimed that light was a wave. But in the early eighteen hundreds Thomas Young decided he was going to devised a plan on how to test it. Mr. Young invented the double slit experiment but before someone can they need to understand how particles and waves act. Let’s imagine you have a gun that shoots marbles at a wall with a slit in it. On the other side of the wall there is another wall with a line in is showing where the marbles hit it. Now let’s imagine the same thing again but with two slits. What happens? Well two lines with show up on the back wall of course because the marbles shoot in one direction and shoot straight through one of the slits and into the wall. Well what if we try the same thing but with waves. If we

Light can be seen by many people, but what really is light? What does it symbolise, or mean to certain people. In Time and Again the light has many different meanings. The light is coming from multiple sources meaning that the light has different effects and it is helping to tell the story by allowing us to use these different lights in order to see a theme. Light will allow a person to have different emotions depending on how they perceive it.

Scientists in the USA have seen something amazing in space for the very first time. They saw gravitational waves. These are waves that form in space and travel outwards. The waves are similar to how ripples in water move outwards after you throw a stone in a lake. The gravitational waves in space start when two giant space objects hit each other. Albert Einstein first spoke about waves in space in 1916 when he made his General Theory of Relativity. One hundred years later, the researchers have proved that Einstein's theory was right. The researchers used powerful technology to see the gravitational waves. Einstein did not have this technology. He used his genius to predict that the waves existed.

Infrared is a form of light. We cannot see it but we can feel it. Infrared is a type of radiation, so it gives off heat. Like any radiation infrared can be dangerous in big amounts. We come in contacted with