Essays on Electromagnetic Spectrum

Chapter 1 – Introduction to Color Study

1. What is the difference between direct light and reflected light? Give examples of each. Direct light travels from the source to the destination without being interrupted while reflected light is the light produced when the direct light bounces off a material. One example of direct light is the sunlight while reflection from the mirror is an example of reflected light (Young, Freedman & Ford, pp. 1080). 2. Describe the cause of color, the means used to generate it, and the effect. Light consists of a spectrum of light wavelengths which have a representative color; thus, upon reaching the retina ...

Infrared Cameras

Introduction An infrared camera is a non-contact device that detects infrared energy and converts it into a visible light display. The infrared energy is first translated into electrical impulses that are then converted into data for camera display. The image or video formed on the screen is of different colors depending on the intensity of the infrared emission. Most cameras have built-in visible light digital cameras that allow merging of infrared and visual images. There are two different types of infrared cameras; cooled cameras and uncooled cameras. The cooled infrared cameras produce superior image qualities than uncooled cameras but ...

Question 1

The solar system is situated in the outer reaches of the Milky Way Galaxy. The Milky Way Galaxy is a spiral way and is made up of over two hundred billion stars. The Milky Way Galaxy has many arms which are named for the constellations seen in those directions. Examples of the spiral arms within the Milky Way galaxy include the Sagittarius arm, Centaurus arm, Perseus arm, Cygnus arm and the Orion Spur arm. Our solar system is located in a spiral arm that is called the Orion Spur. The Orion Spur is named after the constellation “Orion the hunter”. The ...

Question 1

The vernal equinox occurs in March when the sun appears to be crossing the celestial equator. During this time, the sun is usually heading north. The autumnal equinox occurs in September when the sun crosses the equator as it moves towards the South Pole. On these days, the sun is directly over the equator. This results in equal durations of day and night.

The solstices occur when the earth is at its farthest distance from the sun. It occurs due to the elliptical shape of the earth’s orbit around the sun. This means that there are two solstices ...

A photon is particle characterizing a quantum of light or any other electromagnetic radiation. Generally, the term photon is used to illustrate the whole electromagnetic spectrum. It seems like a point-like particle because it is absorbed or released as a whole by arbitrary minute systems which are much smaller than its wavelength. Photons exhibit wave-particle duality i.e. displaying properties of both waves and particles though this is difficult to visualize without laboratory equipment. They display clearly wave-like phenomena like diffraction and interference on the length scale of its wavelength. In the same way as all elementary particles, photons are presently explained by ...

The spectrum challenge addressed in the article indicates that, students as well as individual radio hobbyists with technological expertise and skills demonstrated their capabilities to participate in the cooperative and the competitive tournaments. In the first instance, the competitors attempted to effectively share the spectrum as they transmitted random data files from their source to destination radios. However, in the competitive tournament, two teams sought domination of the spectrum, with the winner being the first to transmit all its files within three minutes from the source radio to the destination radio. In order to ensure fairness, DARPA provided all ...

Introduction to Wave

Wave motion is known as transfer and moving energy from one point to another, wave is also referred as oscillation or disturbance that travels along the matter or space. There are two categories of waves they include transverse and longitudinal waves. In longitudinal wave particles of the medium are displaced in a direction parallel to the energy transferred while in a transverse wave particles of the medium are displaced in a direction perpendicular to the direction of energy transferred (Hewitt & Paul, 35). Waves can be moved along ropes across the surface of strings and water. Some waves can travel through space. ...

Abstract

Electrons of an atom exist in well defined energy levels which can jump to higher energy levels on absorbing thermal or electrical energy. The atomic absorption is subsequently followed by emission of light radiation. The wavelength of this emitted radiation is distinct and characteristic of every atom. With the help of a spectrometer the wavelength of these electromagnetic radiations can be visualized and measured. The emission lines in all other series for the atom can then be calculated using the Balmer-Rydberg equation. This establishes an inter-connection between the electronic transitions and the corresponding wavelengths which can be depicted in the ...

Introduction

Autonomous guided vehicles are also referred to as automated guided vehicles or automatic guided vehicle. Its robot which follows wires or marks in a flow or any other surface that it may be guided through. They are commonly used in industries to carry materials around warehouses and other manufacturing facilities. This is useful in area where it could be difficult for human beings to carry loads. Automatic vehicles can also be applied in exploration work or where there is possibility of damage. They are used for electrical installations as well as navigation through hazardous areas especially those suspected to be ...

Physics forms a fundamental basis for study of other science disciplines, such as chemistry. Physics is concerned with the study of natural laws. Many things happen in the universe despite having low probabilities of happening, but physics explains the relationships of events, provides solutions to real life problems, and sets a foundation for understanding of the causes of natural events. It is for this reasons, I love physics. The essay outlines several reasons why I like the topic “Electromagnetic spectrum”. I find electromagnetic spectrum as an interesting topic for study because of its direct application in to real life problems, ...

Photography in modern criminal investigation

Advancements in technology have transformed the lives of many people, organizations, and the criminal justice system. Modern criminal investigation is highly dependent on photography and chemistry. It is imperative that every judge knows the difference between an authentic and a doctored photograph. Although most digital photographs have been held inadmissible in court because of the high possibility of alteration, a single photograph can convince a juror that an individual is guilty. A prosecutor just needs to show the juries a single picture and the opposing lawyer will spend very much time trying to convince them otherwise but photographic evidence cannot be disputed or ...