Light wave and matters, engineering, Other Engineering

Expertsmind.com brings you unique solution in physics

-          What is light?-           

-          Light is an electromagnetic wave that also comes in "photons"

-          Each type of light or photon has a different wavelength, frequency and energy.

-          In order of increasing wavelength, the forms of light are gamma rays, x-rays, ultra-violet, visible light, infrared, micro waves, radio waves

           What is matter?   

-          Ordinary matter is made is of atoms.

-          Atoms are made of protons, neutrons, and electrons.

-          Isotopes  of a particular chemical elements have the same number of protons but different numbers of neutrons 

-          Matter can emit (lamp) , absorb, transmit (mirror, glass) or reflect light

-          How does light tell us the temperatures of planets and stars?

  Objects such as planets and stars produce thermal radiation spectra, the most common type of continuous spectra. We can determine the temperatures from these objects because the hotter the objects are the more radiation per unit area and emit photons with a higher energy.

How does light tell us the speed of a distant object?

The Doppler Effect tells us how fast an object is coming towards or us or away from us. Spectral lines are shifted to shorter wavelengths for objects moving towards us and longer wavelengths for objects moving away from us.

Posted Date: 2/11/2012 11:07:52 PM | Location : United States







Related Discussions:- Light wave and matters, engineering, Assignment Help, Ask Question on Light wave and matters, engineering, Get Answer, Expert's Help, Light wave and matters, engineering Discussions

Write discussion on Light wave and matters, engineering
Your posts are moderated
Related Questions
Where are the recomended areas or industries where an Agricultural Engineering Student can apply for industrial training?

all about pepsi company symbol PEP 1. What is the name of the company? What is the industry sector? 2. What are the operating risks of the company? 3. What is the financial risk

Review the lecture on BB document “Pharmacology …..” slide 6 where the solution for a 1st order system was demonstrated. The generic system is A(X)?(K1)?B(Y)?(K1’)?C(Z) 1. Cr

a hexagonal prism of 40mm side length of base and height 80mm is resting on HP on its base with two edges of base is parallel to horizontal plane. A square hall of equally inclined


list out the errors in lenier measurment

Q.   Explain Bragg's law. A monochromatic X-ray is incident on a crystal. By rotation the crystal, two successive reflections are obtained at angles of 10.0° and 23.0°. the inter p

Who is a more senior creditor, a bondholder or stockholder?  The bondholder is always more mature. Stockholders (including those who own recommended stock) must delay until bond

Q. Discuss the classifications of plastics.                                                      OR      Discuss the general properties and classification of plastics.

occasionally we are getting black streaks in our powder coated parts. Does not seem to be related to paint contamination or cleaning prep. Has anyone else seen this or know what co