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What is the difference between laser red, green and blue?
I see that red is the cheapest, it costs a little green and blue is more expensive. Then, What is the difference?
You ask about the color or the device? about the color, the only difference in frequency. Red is a frequency less than green, and green lower than Blue. Approximately 390 THz Red, Green and Blue 540 THz 700 THz (Tera Hertz) About the device: They are all types of semiconductor LEDs (light emitting diode), working as a laser, (very inverted electron population), which requires more energy than common led to obtain the laser. And made of different materials, depending on the quantum level difference in order to obtain the appropriate wavelength for light. Wave length is related with the frequency and the speed of light. Approx. Red 750 nm, Green 550 nm, Blue 350 nm (nano meters) emission wavelength (or frequency) depends on the quantum difference between the orbits of electrons "in the diode 'union'. When the electrons fall from the upper to the lower level, a photon is emitted. The wavelength of the photons depends on the quantum level the difference. In order to "produce the quantum level difference" has to choose different materials to construct the junction of the diode. Red lasers are easy to build and are produced in large quantities to lower their prices. LASER green little harder ro to construct and which cost a little more. blue laser was sought for many years, finally get the right mix to build "blue union. It is more difficult to build, and there enoguht production yet, so the cost is higher. Additionally, each year the diode are built with more 'power' which is another challenge to build the union with adequate current capacity is sufficient. Current must flow through the junction in order to "elevate" the level of electrons.
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My-Kap - Reuse Your Keurig K-Cups (1 Clear, 1 Red, 1 Green) - Over 30,000 Sold List Price: $14.99 Sale Price: $14.99 Average Rating: ![]() |
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Also available in quantities of 9 and 18. Check "Other My-Kap products" above. This product contains three (3) My-Kap™ kaps, one removal tool, one cleaning brush, and instructions. Colors are CLEAR, RUBY RED, and EMERALD GREEN. You also get a guarantee. If you are not satisfied within 30 days, you can send it back and we will refund your money. If it breaks any time, we will replace it. These kaps will allow you to reuse your Keurig K-Cups many times. You can refill your K-Cups with your favorite coffee or tea. Three colors are included, clear, red, and green. In addition a cleaning brush is included which also can also be used as a removal tool to remove the kap from the K-Cup after it has been used. The Keurig standard approach involves the purchase of K-Cups with coffee, tea, hot chocolate, etc. The K-Cups make excellent coffee. But they each cost anywhere from $.25 to $.50 per cup depending on the quantity and where you purchase them. If you like to drink coffee like me, this can add up to quite a bill really quickly. So you say, why not get a reusable K-Cup. Good idea. But there are a few problems with the system Keurig wants you to use. First the reusable K-Cups cost $14 and up. If you want 10 of them, that is $140 just for the reusable cups. Second, the Keurig's resusable K-Cup does not produce as good of a cup of coffee as the K-Cup itself. The designs are different and the water flows out the sides of the filter rather than down through the coffee. Third, the design is big, bulky, and hard to store. If you already have a turnstile for K-Cups, you can not store these there. With this product you can. The Kap allows you to recycle your K-Cups. Fill them with your favorite coffee or tea. And use them many times before they have to be thrown out for good. That lowers your cost for each cup of brew and also give you better brews each time. |
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Easy Sprout Sprouter - Easy & Fast Way to Grow Fresh Salad Sprouts in Your Own Kitchen - Grow Alfalfa, Mung Bean, Brocolli, Radish, Red Lentil, Green Lentil, Clover, & More. List Price: $12.39 Sale Price: $12.65 Average Rating: ![]() |
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Grow a pound of tasty sprouts in 8-48 hours with convenient NO RINSE SPROUTING! The Easy Sprout Sprouter The unique quart size dual container system uses heat from sprouts to circulate fresh humidified air by convection, prevents suffocation, and dehydration so sprouts need less rinsing, grow pound batches of healthier tastier sprouts with minimal effort, has a vented lid that is ideal for travel sprouting and storing sprouts in the fridge. Stackable, durable and easy to clean, Easy Sprout is made for the finest quality food grade materials. Comes with a 30-day love it or return it guarantee. |
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Oh Happy Day List Price: $17.98 Sale Price: $6.86 Average Rating: ![]() |
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You don't just hear gospel music, you feel it. At the heights of its power, this uniquely American art form connects the spirit of the writer, performer and listener with a truth much higher than presents travails. The notes, rhythms, and lyrics paint a picture of the ongoing tale of struggle, persecution, redemption and freedom. Blues, rock and roll, r&b, country and even modern hip hop and rap music have all been influenced by the sound and soul of gospel. It has faced down the bleak days of slavery, depression, violence and fear with a tear in its eye and a promise on its lips. On Oh Happy Day, a wide array of contemporary artists has been paired with some of today's leading gospel voices and legendary choirs. Together they explore a batch of gospel standards and main-stream hits that were clearly inspired by the old soulful sound and feel of gospel. It's an all-star celebration that just might take you someplace higher if you let it. Track listing: 1. I Believe - Jonny Lang (with the Fisk Jubilee Singers) 2. Presence Of The Lord - 3 Doors Down (with Soul Children of Chicago) 3. Higher Ground - Robert Randolph & The Clark Sisters 4. Keep The Faith - Jon Bon Jovi (with Washington Youth Choir) 5. People Get Ready - Al Green & Heather Headley 6. Waiting For My Child To Come Home - Mavis Staples & Patty Griffin 7. Storm Before The Calm - Michael McDonald (with West Angeles Cogic Mass Choir) 8. Redemption Song - Angelique Kidjo 9. A Change Is Gonna Come - Aaron Neville (with Mt. Zion Mass Choir) 10. Oh Happy Day - Queen Latifah (with Jubilation) 11. This Little Light Of Mine - Joss Stone & Buick Audra |
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Appalachia Waltz / Ma, Meyer, O'Connor List Price: $11.99 Sale Price: $7.35 Average Rating: ![]() |
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