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Why do you think remote controls for TV's VCRs and stereos use infrared light rather than ultraviolet light?
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Does blue or violet light have a long wavelength?
No. Some are longer trhan others, but they are all very short. Light visible to the human eye has wavelengths ranging from a little more than 100 micrometers (infrared) to less than 1 nanometers (ultraviolet). In reference to visible light, infrared is referred to as long wavelength and ultraviolet as short wavelength light. I can't remember the units, but the human visible area is from about 400 (deep blue) to 700 (red), so a rather more restricted range than implied above. All those wavelengths are indeed very short.
Do hotter objects emit more infrared radiation?
True , because the warmer objects give off more infrared radiation than cooler objects ..
What kind of radiation do warm objects give off?
Warm is a rather vague term. If it means neither cold enough to freeze your flesh nor hot enough to burn it, the answer is infrared.
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
What are the sensors in the washing machine?
Temperature, water level, spin out-of-balance detector, leak detector, drum speed, mains failure. The front panel controls may be sensors rather than knobs and pushbuttons.
Why do you think remote controls for tv VCR and stereos use infared light rather than ultraviolet light?
Common household remote control devices typically use infrared light or radio frequencies.
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.
Is electromagnetic radiation infrared radiation?
No, not in general. It is rather the other way around. Infrared radiation is electromagnetic radiation, and electromagnetic radiation spans multiple types of radiation, from microwaves, light, infrared, ultraviolet, radio, and more. So electromagnetic radiation could be infrared, but that is just one type of electromagnetic radiation
The wavelengths of thermal infrared emitted by the Earth are?
The Earth emits thermal radiation of a much lower intensity in the infrared rather than visible region . The wavelength of infrared rays is around 10^-6 meter.
Can you replace a ball mouse with an infrared mouse?
Technically, yes. I doesn't matter whether it's a ball or an infrared mouse, I'm pretty sure they hook up to the computer the same way, and they both work rather similarly, but I really like infrared mouses better.
Does blue or violet light have a long wavelength?
No. Some are longer trhan others, but they are all very short. Light visible to the human eye has wavelengths ranging from a little more than 100 micrometers (infrared) to less than 1 nanometers (ultraviolet). In reference to visible light, infrared is referred to as long wavelength and ultraviolet as short wavelength light. I can't remember the units, but the human visible area is from about 400 (deep blue) to 700 (red), so a rather more restricted range than implied above. All those wavelengths are indeed very short.
Do hotter objects emit more infrared radiation?
True , because the warmer objects give off more infrared radiation than cooler objects ..
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.
Where can I learn about infra red cameras?
Infrared cameras use heat to create an image, rather than color. People use infrared cameras to take images at night, when color isn't readily visible. Try www.infraredcamerasinc.com for more info.
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.
What is an ir detector?
In IR (InfraRed) detector is a circuit that receives an infrared input, either in an alarm or as a heat sensing device. In an alarm circuit, using an infrared beam rather than a laser has both advantages and disadvantages. Passive heat sensors rely on a general increase in temperature to identify a likely source, e.g. an animal, person, or vehicle engine.
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.
