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Why do you think remote controls for tv VCR and stereos use infared light rather than ultraviolet light?
Wiki User
∙ 9y ago
Common household remote control devices typically use infrared light or radio frequencies.
Wiki User
∙ 15y ago
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What is a definition of cultural variable?
Cultural Variables Are Accept ambiguity Tolerate the impractical Have low external controls Tolerate Risk Taking Tolerate conflict Focus on ends rather then means Develop an open-system focus provide positive feedback
What substance will break rather than bend?
Ice will break rather then bend
What atmosphere protects the people from harmful ultraviolet radiation from the sun called?
Simple, the Ozone Layer.
When asking a question should you use the word weather or rather?
For example: would you rather do _____ or ______?
When earths surface is heated it radiates some of the energy back into the atmosphere as ultravioet radiation?
That's...rather unlikely...Across the Electromagnetic Spectrum (Radio, Microwave, Infrared, Visible light, Ultraviolet, X-ray, and Gamma radiation), The higher you go in frequency (and the lower the wavelength), the higher the temperature must be to emit its respective radiation.To emit ultraviolet rays, a body must at least be able to produce its own light source. Since Earth is not capable of that, we can rule out that it produces light waves from that heating.Whether Earth can radiate UV radiation is debatable. The ozone layer, the protective shield hovering over us, reflects the great majority of UV back into space. A small amount pervades through this layer, and will show up, and some reflective surfaces like the ocean will reflect it. However, to say it radiates?Additionally, UV radiation is not the cause of heating. Most people think that because UV radiation from an untampered source will always be accompanied by Infrared radiation (which is the actual cause of heating), so they simply associate UV rays and heat together. So UV rays do not heat up the atmosphere. They are reflected in moderate amounts, but they do not cause thermal fluctuations.
Does a wireless keyboard use ultraviolet light waves to communicate with tehe computer?
The wireless keyboard or mouse uses infrared technology rather than ultraviolet rays to communicate with the computer, and as such there is no risk of radiation exposure with this.
Are the digital tempurature controls more efficent then the old dial type tempurature controls What brands offer the digital tempurature controls.?
Yes, digital temperature controls allow you to get the refrigerator to an exact temperature rather than just close to it like the dial type temperature controls do. BIOCOLD is a brand that offers digital temperature controls.
What does 10 way power driver's seat mean?
It means the drivers seat has powered controls rather than manual controls, you like forward back, up down etc.
What does 10-way power driver's seat mean?
It means the drivers seat has powered controls rather than manual controls, you like forward back, up down etc.
Why do birth control pills contain progesterone?
if a woman is breastfeeding her child, it is healthier for her child if her bc contains progesterone, rather than estrogene. progesterone controls the release of eggs
Will a 1980 outboard engine fit on my 1989 boat are the controls going to have to be changed?
This is rather vague, but as long as the mounting holes are the same, and both are the same type of controls, IE... mechanical or electronic, you should not have to change anything.
How do you lock controls in asp dot net at design time?
There's no such need in ASP.NET since controls are not places at specified locations rather at default locations. Generally one uses tables and layouts to place them in specific cells.
Do any car DVD Players have a removable face?
There are several models of DVD players with removable faces.However these are usually designed for listening to audio DVD's rather than watching video.These are usually very expensive car stereos with scores of features. anonymous@oola.com
What political group controls internet Canada free press?
actually, I'm looking for the answer, so I conclude that you are part of the problem rather than the solution
What part of the electromagnetic spectrum do animals see?
A typical human eye will respond to wavelengths from about 390-750nm. In terms of frequency, this corresponds to a band in the vicinity of 400-790 THz. Bees and many other insects can see light in the ultraviolet, which helps them find nectar in flowers. Plant species that depend on insect pollination may owe reproductive success to their appearance in ultraviolet light, rather than how colorful they appear to humans. Birds too can see into the ultraviolet (300-400 nm), and some have sex-dependent markings on their plumage, which are only visible in the ultraviolet range. this is from the wikipedia article on visible light in the electromagnetic spectrum
Why are the photons that emerge from the Sun's surface visible-light photons and infrared-light photons rather than gamma-ray photons?
Photons do not come in different types like infared-photons etc. they are just the wavelength that the photons are at and nuclear fusion just happens to emit photons at a particular wavelength
Does pH control the relative concentration of CO2 in water?
No. Rather, the CO2 concentration controls the pH. Other factors control concentration, such as temperature, pressure, contamination, and availability of CO2.
