The Theory Of Light And Its Effects On The Human Eyes

The word laser is an acronym for, “Light Amplified by Stimulated Emissions of Radiation”, this means that all the lights in a laser have the same wavelength. Within a century of the laser being invented it occupied a major role in scientific research, medicine, industry, and even daily life. Lasers are used in the medicine field for procedures such as, laser eye surgery, heart, stomach, and intestinal surgeries. These procedures laser procedures are said to be harmless. Major factory industries use lasers to cut many things ranging from thin

The complex journey to discover lights nature begins in the 1800s on (as I like to imagine) a bright, sunny day when man named Thomas Young performed an experiment. In this experiment Young shone a light through narrow slits, and then shone that light through two very narrow slits. If light is made up of particles, then the particles should pass straight through the slits and produce two light stripes on the screen, approximately the same size as the slit. On the other hand, if light is a wave, then the two waves emerging from the two slits will interfere with each other and produce a pattern of many stripes, not just two. Young observed many stripes clearly indicating light is infact a wave. James Clerk Maxwell determined that light is an electromagnetic wave: a wave of oscillating electric and magnetic fields. When Heinrich Hertz experimentally confirmed Maxwell's result It seemed that the case was settled and light is indeed a wave, however this is not where lights journey ends.

2. By passing a beam of sunlight through a prism, Newton showed that white light comprised all the visible colors of the spectrum.

Huygens was one of the first scientists to recognize that the speed of light must necessarily be a finite quantity, and from this he was able to determine a kinematic theory of light. The theory details spherical waves which emanate at the speed of light (which Huygens did not explicitly define other than saying that it was a finite quantity) in uniform wave fronts. Huygens’ spherical light waves propagated in a longitudinal fashion, and thus must necessarily have a medium through which to propagate. Huygens envisioned this ether was “composed of tiny, closely spaced, elastic particles, which vibrate and pass on the waves of light” (Charles). However, not all of Huygens’ contemporaries agreed with his formulation of the wave nature of light. Isaac Newton, in particular, was a vocal opponent of his theory in favor of his own ‘corpuscular’ theory of light. Huygens, as stated in his Ebscohost Biography: “...regarded the transmission of such particles through empty space to be mere Newtonian “action at a distance” again and incompatible with a mechanistic view of nature”. However, Newton’s prominence at the time meant that Huygens’s theory of light remained relatively unknown until mid-19th century, when it was rediscovered and eventually reformulated into what we now know as the Maxwell

The nature of light has been the subject of contentious scientific scrutiny for most of recorded scientific history. At the heart of that scrutiny was a debate over the fundamental properties of light: is light a wave or a particle? Ancient scientists like Euclid of Alexandria and Ptolemy of Rome conducted rudimentary experiments exploring the tendency of light to reflect off of smooth surfaces or refract when passing through a medium. These were the first indications of light’s wave properties. Ultimately, this wave theory of light was insufficient in explaining all of light’s phenomena; for example, when light encounters a corner, it will cast a shadow rather than bend around the corner like waves of sound--thus the debate continued. The work of an Italian physicist, Francessco

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

The light is listed on the visible spectrum. The visible spectrum is made up of violet. Indigo, blue, green, yellow, orange, and red. The spectrum goes in order from 380 mm to 680 mm. It gets higher when you go to the right and smaller when you go to the left.

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

Soon after Einstein discovered that light was a particle he wrote a paper in which he described light as a wave. It turns out that light is a collection of photons which travel as an electromagnetic wave. This explains how light can be both a wave and a

Is light a wave or a particle? This is a question that has been debated for centuries and still is unproven to be only one or the other. This report is about explaining Young’s Double Slit Experiment, which tried to prove light as a wave, and the results of his experiment. This report is also to inform and explain the modern physics world, and it will accomplish this by explaining Young’s Double Slit Experiment to help understand a small part of the modern physics world.

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.

This perspectivist ideas in known as the “account of radiation.” The two flaws that they saw pertained to light and his holistic view. They first pointed out that light is, in fact, visible. Tweaking Aristotle’s view, they gave the role of light more significance and power. They said not only does light let the eye see the object in view, but it also gives sight to us in general. Light lets us see the color of the objects around us and not only that, the source of the light is radial. They believe that light isnt free floating, but rather it has specific points, where it illuminates from. From this point, it has a radius and everything in its radius is exposed. To make Aristotle right they said because the light lets us see the colors and things around us it makes it “act” invisible, even though it really is a visible factor. In addition to this, the view that light comes from a point, proved Aristotle’s holistic view wrong. This is because light lets us instantly see and understand what we are seeing. There is no form to understand. The object seen is just an object, and that object can be understood by looking at it and observing it, due to the

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.

Einstein has brought many insights of life including the theory of the speed of light, which has led to the special theory of relativity that molded the way science, is today. “For example, various experiments, including the Michelson-Morley experiment, failed to measure the expected changes in the speed of light relative to the motion of the Earth. Due to this Einstein recognized that light has a measured speed that is independent of the speed of the observer” (“Albert Einstein.” 4). “Einstein showed in 1907 that mass is related to energy by the famous equation E=mc^2, which indicates the enormous amount of energy that is stored as mass, some of which is released in radioactivity and nuclear radiations, for example in the sun” (4).This enabled Einstein to be able to start and finish the general theory of relativity.

Light is made up of photons that has many characteristic of both a wave and a particle. This characteristic of particles acting like a wave and a particle is called the wave/particle duality. It acts like a wave because light has certain frequency in which determines the type of light it is. This property is very similar to sound waves where the wavelength changes how the soundwave sounds to the human ear. Light can be a different electromagnetic wave like UV light, gamma ray, X ray, and etc depending on the wavelength and frequency. Light also acts like a particle because of the photoelectric effect. This was discovered by Albert Einstein’s experiment. The experiment consisted of shooting photon into a vacuum tube. The results of that experiment was that light did not increase the electron output when increasing the intensity of the light. Water is made up of two hydrogen and one oxygen. At room temperature(which is 21°C or about 70°F), water is in liquid form. Within water, the water molecules are moving around giving it its liquid flexibility. However, water is very attracted to each other because water molecules is a very polar. This is because water’s electrons are closer to the oxygen atom due to the electronegativity of the oxygen atom being higher compared to the two hydrogen atom within the water molecule. This creates a hydrogen bond which is the strongest of the three intermolecular forces (beng london dispersion forces, dipole-dipole attractions,