Photo Laser How is a thermal photo printer compared to an inkjet photo printer & laser photo printer?
thermal photo printer - is for more faster and professional use ex. office library.
ink jet photo printer - Ink jet printers operate by propelling variably-sized droplets of liquid or molten material (ink) onto almost any medium. They are the most common type of computer printer for the general consumer[citation needed] due to their low cost, high quality of output, capability of printing in vivid color, and ease of use.
laser photo printer - many used to high use in photoshops
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can I have (photo facial) laser treatment after a month and a half of getting rhinoplasty?
i think rhinoplasty is enough. i'd say talk to the doctor about that one though.
Motor Laser How much work is done by the motor in a CD player to make a CD spin, starting from rest?
How much work is done by the motor in a CD player to make a CD spin, starting from rest? The CD has a diameter of 12.5 cm and a mass of 15.3 g. The laser scans at a constant tangential velocity of 1.10 m/s. Assume that the music is first detected at a radius of 20.1 mm from the center of the disk. Ignore the small circular hole at the CD's center.
Radius of CD = R = (12.5)/2 cm = 0.0625m
Momemt of Inertia of CD = MI = 0.5*m*R^2 = 0.5* 0.0153kg*(0.0625)^2 = 3.0*10^-5 kg.m^2
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Chauvet MiN Laser STAR is an ultra compact, plug-and-play laser effect light that projects dozens of greens stars and red laser beams that fill any room. Two convenient mounting stands and an infrared remote control are included to make setup and operation a breeze.Pint-sized green star and red beam laser projector for use in small parties that need big coverage Independent control of the red and green laser diodes allow for true customization of the effect Covers a huge area and looks great with or without fog Set the color and rotation speeds wirelessly with the included wireless remote control Motor spins in both directions and at variable speeds to create an ever-changing star field Includes 2 different mounting options to fit the style and mood of any event or party Awesome sound-activated and automated programs dance to the beat of the music or run by them selves Complies with FDA / CDRH standards for Class 3R
Chauvet MiN Laser STAR is an ultra compact, plug-and-play laser effect light that projects dozens of greens stars and red laser beams that fill any room. Two convenient mounting stands and an infrared remote control are included to make setup and operation a breeze.Pint-sized green star and red beam laser projector for use in small parties that need big coverage Independent control of the red and green laser diodes allow for true customization of the effect Covers a huge area and looks great with or without fog Set the color and rotation speeds wirelessly with the included wireless remote control Motor spins in both directions and at variable speeds to create an ever-changing star field Includes 2 different mounting options to fit the style and mood of any event or party Awesome sound-activated and automated programs dance to the beat of the music or run by them selves Complies with FDA / CDRH standards for Class 3R
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How much work is done by the motor in a CD player to make a CD spin, starting from rest? The CD has a diameter?
How much work is done by the motor in a CD player to make a CD spin, starting from rest? The CD has a diameter of 12.8 cm and a mass of 15.8 g. The laser scans at a constant tangential velocity of 1.26 m/s. Assume that the music is first detected at a radius of 20.6 mm from the center of the disk. Ignore the small circular hole at the CD's center.
Radius of CD = R = (12.8)/2 cm = 0.064m
Momemt of Inertia of CD = MI = 0.5*m*R^2 = 0.5* 0.0158kg*(0.064)^2 = 3.24*10^-5 kg.m^2
Required initial rotational velocity = w = tangential velocity / initial radius 20.6mm
w = 1.26 / 0.0206 = 61.2 rad/s
(not taken into account by the first answer)
Work done = WD = increase in rotational kinetic energy = 0.5*MI*w^2
WD = 0.5 * 3.24*10^-5 * (61.2)^2 J
WD = 0.0605 J
(Of course in reality WD is much greater because the CD drive spindle etc. has a much greater mass than the CD itself)
Nitrogen Laser What cutting conditions are used to cut 11ga mild steel with nitrogen on a Hankwang laser?
I currently run a 3000 watt Hankwang laser and I am told that I can cut 11ga mild steel with nitrogen. What should I set my cutting conditions to and what size nozzle and gas pressure should I use?
Nitrogen is one of the most critical elements for all life forms. In agricultural systems it is essential for the production of crops for feed, food, and fiber. The ever-increasing world population requires increasing use of nitrogen in agriculture to supply human needs for dietary protein. Worldwide demand for nitrogen will increase as a direct response to increasing population. Nitrogen in the Environment provides a wholistic perspective and comprehensive treatment of nitrogen. The scope of this book is diverse covering a range of topics and issues related to furthering our understanding of nitrogen in the environment at farm and national levels. Issues of nitrogen from its effects on crops and human nutrition to nitrogen in ground water, watersheds, streams, rivers, and coastal marine environments are discussed to provide a broad view of the problem and support scientists, researchers, and engineers in formulating comprehensive solutions.* The only source which presents an international, wholistic perspective of the effects of nitrogen in the environment with worldwide mitigation practices * Provides details on how to improve the quality of the environment by analyzing the development of emerging technologies* Develops strategies to be used by soil scientists, agronomists, hydrologists, and geophysicists for broad scale improvement of nitrogen efficiency
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A concentrated blend of nitrogen sources. Provides nitrogen in both the nitrate form and plant-preferred ammonium form. Search_Phrases: Miscellaneous Aquariam,Flourish Nitrogen 250 Milliliter,Seachem Laboratories Inc
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All organisms require nitrogen to live and grow. The movement of nitrogen between the atmosphere, biosphere, and geosphere in different forms is described by the nitrogen cycle. This book is an activity of the COST 856 Action on Denitrification. It covers
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Explains how carbon dioxide and nitrogen are important to life on earth, including information on how they flow between living things and affect the environment.
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Emphasis is placed on the analysis of translational, rotational, vibrational and electronically excited state kinetics, coupled to the electron Boltzmann equation.
Emphasis is placed on the analysis of translational, rotational, vibrational and electronically excited state kinetics, coupled to the electron Boltzmann equation.
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LE N2 low pressure longitudinal nitrogen laser - the story (reload)
Calculate the energy of a photon of electromagnetic radiation at each of the following wavelengths.?
1)632.8nm (wavelength of red light from helium-neon laser)
2)12.24nm (wavelength of microwave oven)
3)337.1nm (wavelength of nitrogen laser)
This is something you need to learn. I will give you the example then you need to figure out the others.
equations: c = λ*v, where c = speed of light in a vacuum = 2.9979 x 10^8 m/s; λ = wavelength in meters; v = frequency in s^-1 or 1/s, also Hz, hertz.
Energy = E = hv = hc/λ, where h = planck's constant = 6.626 x 10^-34 J*s
NOTE: 1 J = 1 joule = 1 kg*m^2/s^2
1. λ = 632.8 nm(1 m)/(1 x 10^9 nm) = 6.328 x 10^-7 m
E = (6.626 x 10^-34 J*s)(2.9979 x 10^8 m/s)/(6.328 x 10^-7 m) = 3.155 x 10^-19 J
Do you see how all of the units cancel except the joules?
1st step: convert nm to m
2nd step: calculate energy
That's how you do it. Now let's see you do the next two.
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All About Blu Ray Player and Blu Ray Technology
Blu-Ray technology is the next generation of optical disc format developed by the Blu-Ray Disc Association(BDA) and major developers of consumer electronics, computers, and media manufacturers around the globe. The technology will enable consumers to store large amount of data (5 to 6 times more than DVD), record/rewrite digital content, and watch high definition videos via Blu-Ray devices. The Blu-Ray disc comes in two types: Single layer disc which will be introduced first in the market and dual layer disc which will follow near future. The single layer can hold up to 25 GB of data which equates to about 2 hours of recording/playing time of digital content on HDTV and 13 hours of non-digital content from a regular television. The dual layer disc will hold data up to 50 GB and it will be mainly utilized for gaming (PS3) and entertainment purpose.
The current optical disc technology such as DVD utilizes red laser to read and write data. However, the Blu-Ray technology uses blue- violet laser to read and write. There are several differences between the red laser and blue laser. First, the wavelength of a blue-violet laser is shorter (405nm) than the red laser (650nm). Second, the numerical aperture has been improved to 0.85 from .60. The shorter wavelength of a blue-violet laser leads to more accurate focus on the laser spot, which makes it possible to pack more data onto a DVD sized disc. The numerical aperture measures the ability of a lens to gather and focus light. The aperture number 1 represents the greatest focusing power and smallest laser spot. The DVD?s numerical aperture ranges from .50 to .65 compared to the Blu-Ray?s numerical aperture of .85, making it a big improvement over the existing optical disc technology.
The technology industry has seen an explosive demand for the HDTV and consumer’s desire to record high definition content. Fueling the demand is the U.S government’s mandate to shut off analog broadcast by February 17th of 2009 and replace it with digital broadcast. The Blu-Ray technology was created out of necessity to meet the new demand and to set a new standard in the field of optical disc. This technology supports direct recording of the MPEG-2 TS (Transport Stream) which is used by many digital broadcasters globally. In other words, digital content from HDTV can be recorded directly to the disc without compromising quality and extraneous processing power. Also, Blu-ray will support MPEG-4 in H.264, and SMPTE, Microsoft’s Windows Media Video. The Blu-Ray’s 1x speed is rated at 36Mbps which is less than the required 54Mbps for movies and games. Movies and game discs will utilize at least 2x speed, which is 72Mbps data transfer rate, to complement the large amount of data required for high definition content. This fast rate is more than sufficient to record and playback HDTV while maintaining the original picture quality. It is very possible to watch playback video and record HD video at the same time through the use of random access feature offered by the Blu-ray technology.
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