Light Theory Of Light Essay

UBT1 Task 1: Electricity Introduction What is Electricity? This question is difficult to answer because this is a broad concept of science with multiple definitions. In physics, Electricity is a naturally occurring phenomenon of the flow of electric charge. In other words, the process of attraction and repulsion between electric charges produce electricity. There are two types of charges- negative charges and positive charges.

Abstract The purpose of carrying out this experiment was to investigate the phenomenon of Newtons’s Rings, to gain a better understanding of the theory Newton developed as well as to calculate the radius of curvature of a plano-convex lens and the thickness of a section of optical fibre. The effect is named after Isaac Newton who first studied it in 1717. The pattern observed appears as a series of concentric bright and dark fringes, which has its centre at the point of contact between two surfaces.

When closely observed, the light will also change the direction it travels as it passes through the two media (Air to Glass). The transmitted wave/light will experience refraction at the boundary between media. As we observe the diagram on the right, the individual wavefronts will bend as it cross the boundary. Once the wavefront cross the boundary, it travels in a straight line, hence why refraction is known as a boundary behaviour. The diagram shows a ray drawn perpendicular to the wavefronts which represents the direction which light travels.

He developed a mathematical Equation that related the pattern of electrons with that of waves, he gave his wave mechanics the symbol psi . In 1932 James Chadwick discovered a second particle in the nucleus, he fired alpha particles at beryllium and found that neutrons were released. He revised Bohr’s model of the atom to include a representation of both protons and neutrons in the visual diagram.

1672 - Colours explained Isaac Newton demonstrates how white light can be separated into a spectrum of colours with a prism. He develops ideas about different colours of light being absorbed, transmitted or reflected. His book Opticks is released to the public in 1704. 1678 - Wave theory Dutch physicist Christiaan Huygens argues that light consists of waves and uses this theory to explain double refraction. Thomas Young’s experiments (1801) support Huygens’s wave theory.

Laser: A laser is a device that emits light through a process of optical amplification based on the stimulated emission of electromagnetic radiation. The term "laser" originated as an acronym for "light amplification by stimulated emission of radiation". Laser provide intense and unidirectional ray of light. Laser light is monochromatic.

The crystalline lens is not a solid body – it’s elastic allows to change light refraction angle. It is the making component of the mechanism of a dynamic refraction. The essence of process consists that at absence on a retina of a sharp image of a subject (a poor or excessive tension of a crystalline lens); the signal

The Raman spectroscopy allows the identication of homogeneous materials on the basis of their molecular vibrational spectra, obtained by excitation with visible laser light. This spectroscopy is based on the Raman ef- fect, which concerns to the molecular structure of the objects under analysis. When a monochromatic light impacts on a material, the light is scattered. Most of the scattered light has the same wavelength as the inci- dent light (the Rayleigh scattering) and a small portion is shifted in wavelength due to molecular vibrations and rotations (the Raman scattering) [8].

Light is a component of the electromagnetic spectrum, the spectrum is that the assortment of all waves, that include light, Microwaves, Radio waves, X-Rays, and Gamma Rays. In the late year’s of 1600s, vital problems were raised, asking if light is made up of particles, or is it waves .? Sir Isaac Newton, held the idea that light was created from little particles.

Radio waves have frequencies of 30 kHz to 3GHz. Its wavelength can range from 1km to 1000km. James Clark Maxwell first predicted the existence of radio waves, but its discovery was attributed to Heinrich Hertz. The latter proved its existence based on Maxwell’s equations.