Quantcast FREQUENCIES AND COLOR

Share on Google+Share on FacebookShare on LinkedInShare on TwitterShare on DiggShare on Stumble Upon
Custom Search
 
  
 
1-27 FREQUENCIES AND WAVELENGTHS Compared to sound waves, the frequency of light waves is very high and the wavelength is very short. To measure these wavelengths more conveniently, a special unit of measure called an ANGSTROM UNIT, or more usually, an ANGSTROM (   ZDV GHYLVHG  $QRWKHU FRPPRQ XQLW XVHG WR measure these waves is the millimicron (P      ZKLFK LV RQH PLOOLRQWK RI D PLOOLPHWHU  2QH P) HTXDOV WHQ angstroms. One angstrom equals 1055-10m. Q33.   What unit is used to measure the different wavelengths of light? FREQUENCIES AND COLOR For our discussion of light wave waves, we will use the millimicron measurement. The wavelength of a light determines the color of the light. Figure 1-18 indicates that light with a wavelength of 700 millimicrons is red, and that light with a wavelength of 500 millimicrons is blue-green. This illustration shows approximate wavelengths of the different colors in the visible spectrum. In actual fact, the color of light depends on its frequency, not its wavelength. However, light is measured in wavelengths. Figure 1-18.—Use of a prism to split white light into different colors. When the wavelength of 700 millimicrons is measured in a medium such as air, it produces the color red, but the same wave measured in a different medium will have a different wavelength. When red light which has been traveling in air enters glass, it loses speed. Its wavelength becomes shorter or compressed, but it continues to be red. This illustrates that the color of light depends on frequency and not on wavelength. The color scale in figure 1-18 is based on the wavelengths in air. When a beam of white light (sunlight) is passed through a PRISM, as shown in figure 1-18, it is refracted and dispersed (the phenomenon is known as DISPERSION) into its component wavelengths. Each of these wavelengths causes a different reaction of the eye, which sees the various colors that compose the visible spectrum. The visible spectrum is recorded as a mixture of red, orange, yellow, green, blue, indigo, and violet. White light results when the PRIMARIES (red, green, and blue) are mixed


Electrical News
Last Man on Earth: How Would You Behave?
How do you think you'd behave if you were the...
eetimes.com
Channel Consolidation & Conflict: Back to the Future!
As much as everything changes, everything still stays the same....
eetimes.com
Is Formal Verification Artificial Intelligence?
Artificial intelligence or not, formal verification is a technology that...
eetimes.com
Is Formal Verification Artificial Intelligence?
Artificial intelligence or not, formal verification is a technology that...
eetimes.com
Wearable Cameras Next Boom Market for Image Sensors
Annual shipments of wearable cameras will surpass 30 million units...
eetimes.com
Resistive RAM Memory is Finally Here
Resistive RAM's low power consumption and small cell area make...
eetimes.com
NVM Express SSDs Hit Servers, Workstations
HGST begins shipping its Ultrastar SN100 series for servers announced...
eetimes.com
Moore's Law Demise: Maybe It's a Good Thing
Moore's Law will celebrate its 50th anniversary on April 19,...
eetimes.com
The GaN Era Approaches
Gallium nitride possesses many characteristics that will allow production of...
eetimes.com
Making Wireless LoRa Design Easier, Faster
Microchip has a pre-certified coin-cell sized module to accelerate deployment...
eetimes.com
Engine Yard Pivots Toward Container Management
New Engine Yard CEO Beau Vrolyk is moving the company...
eetimes.com
Transceiver Supports Dual 2.4 GHz IoT Networks
Industrial applications, home automation, and the like often need multiple...
eetimes.com
Moore's Law @50 in the News
Here's a sampler of some of the best of the...
eetimes.com
When Blueprints Were Really Blue: Is Engineering Becoming Less Satisfying?
Back then, working as a professional EE was like being...
eetimes.com
MINI Giving Drivers a Peek at 'Augmented Reality'
Although most drivers have yet to embrace the idea of...
eetimes.com
eevBLAB #9 – Meet Dave
Meet Dave2, the first EEVblog employee....
eevblog.com
Qualcomm to Leverage Monolithic 3D for Smartphones
Qualcomm is looking to leverage Monolithic 3D IC technology to...
eetimes.com
Full Human Head Transplant May Be Closer Than You Think
Suddenly, some of the things we read in science fiction...
eetimes.com
Automotive Chip Reliability: A Matter of Design Methods
Up to 90% of all innovations today are generated through...
eetimes.com
Paper Memory Ready to Roll
Researchers at the Finish VTT Technical Research Centre have demonstrated...
eetimes.com
 


Privacy Statement - Copyright Information. - Contact Us

comments powered by Disqus

Integrated Publishing, Inc.
9438 US Hwy 19N #311 Port Richey, FL 34668

Phone For Parts Inquiries: (727) 755-3260
Google +