Light and Telescopes and Gravity Research Paper

Light and Telescopes and Gravity - Research Paper Example Optics is a common term used to refer to the study of light and its interactions with matter. Reflection is the bouncing back of light on a surface, in most cases resulting in image formation. Refraction on the other hand denotes the bending of the rays of light when passing through one medium to another (124). The speed of light in different transparent materials with ordinary matter is lower than that in a vacuum. For instance, the velocity of light in water is 75% the speed of light in a vacuum. The behavior of light is dependent on its wavelength and like other electromagnetic radiations high frequencies translate into lower wavelengths and vice-versa. Light is made up of photons/ quanta of lower energy levels which evoke excitations (electronic) in the molecules it interacts with resulting in variations in the chemistry/ bonding of the molecule. In the lower portion of the spectrum of light, the radiation (infrared) is no longer visible as the quanta of these radiation lack energy sufficient to elicit variation in molecule retinal of the eye retina, hence no visibility (at least not via quantum absorption) (Walker, 418). Over the limit of visible light, UV radiation is not visible to human eyes because it is absorbed by the internal lens below 400nm and the cornea below 360nm. In addition, the human retina’s cones and rods cannot detect radiation of wavelength below 360nm and are destroyed by such radiation. The main source of light on earth is the sun with approximately half of the EMR from the sun in the visible light region. However, there are a plethora of other light sources and mechanisms of producing light such as bioluminescence, electroluminescence, sonoluminescence, scintillation, radioactive decay, triboluminescence, particle-antiparticle annihilation, chenkov radiation, and so on. Light is either measured via photometry or radiometry. Light applies physical pressure on objects along its path with its

Gifts In The Chinese And American Culture Essay Example | Topics and Well Written Essays - 500 words - 1

Gifts In The Chinese And American Culture - Essay Example There are many things that you should know before giving a gift to a Chinese person.There are many things that you should know before giving a gift to a Chinese person.1. Unacceptable gifts in the Chinese culture. Clocks: Do not give a clock to a Chinese person because it is associated with death. It means that it will soon be time for you to die.b. Book: Do not give a book to a Chinese person because giving a book means that you are delivering a defeat.c. Umbrella: Do not give an umbrella as a gift to a Chinese person because giving it means that the family of the gift receiver is going to break up. Fans: Avoid giving a fan. US-China business solution Website states that a Chinese bride gives fans to her parents, which symbolizes that she is leaving them for her husband. Therefore a fan symbolizes separation.2. Acceptable gifts in the Chinese culture.a. Cognac. Fine whiskeys. Quality wines. Giving banquet is the most respectable gift in the Chinese workplace environment.  Transiti on: Giving gifts in China could be a sensitive issue.1. When to give in China?When you are giving a gift in China it is better to do it privately or to everyone at one time.2. Things you should know before giving a gift.a. ColorsRed and pink mean respectively good luck, wealth, happiness while white and green means death, funerals.b. MannersPresent your gift with two arms and the receiver will do the same.Transition: Now that we have discussed the gift-giving in the Chinese culture, let compare it to the American culture which is less complex.B. Appropriateness and timing are very important while giving a gift in the American workplace environment.1. TimingGifts should never be given in the following situation: a. During the process of bidding. The waiting period for contract renewals. During negotiation.Gifts could be given in the following situation: a. Special occasions (Christmas, the birth of a child, death in a family).b. Recognizing an employee  c. As a token of gratitude.2 . Unacceptable and acceptable gifts in the American workplace environment; a. cash, jewelry, and expensive gifts are unacceptable.b.bottle of wine, the gift card of small value, pen, a basket of fruit or cheese.Transition: The points I mentioned earlier cover the proper and professional ways to give and receive gifts in the Chinese and American workplace culture. Let me review them for you.