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Does a spectroscope spread light into different wave lengths?

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Posted on Apr 18, 2015

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What car rims will interchange for 2013 lincoln mkt


Check the "Tirerack.com" site. But sometimes there can be a difference if the car has 4 wheel drive. I would ask someone who is really into wheels because the mounting studs can be different thicknesses and what they call "offset" can be different. Offset means that a wheel does not always mount in the center of the rim. Sometimes a wider stance is desired(more space between tires) and welding the wheel farther on one side of the rim can spread the track wider .

This offset welding can also be done to accommodate larger brake calipers or 4x4 hubs. These wheel tricks are cheaper than making axles in different lengths.

Feb 06, 2015 | Lincoln Cars & Trucks

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When do tsunamis happen


Tsunamis happen when there is an underwater earthquake, causing the ocean floor to move violently up or down. When the ocean floor moves like that, the water above it has to go somewhere so it spreads out in a very fast wave. The wave is a tsunamis.

May 27, 2014 | Computers & Internet

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Why is it recommended to have a roof aerial for the DVBT broadcast? a; In order to receive any signs of DVBT broadcasting stations, from a great distance b; In order to receive more signs of any D


First thing to think about is what frequency of radio is DVBT on ?
I think you will find that the Analogue tv was VHF where as digital tv is on UHF .
This means that the wavelength of radio signals on UFH is smaller and as a result radio waves do not bounce as readily in the Air and thus the coverage range is less efficient as compared to VHF.
Also being a smaller wave length a new antenna that can cater for the different frequency ranges of digital TV would be required
To efficiently receive a radio signal the antenna's yagi elements have to each be at a length that is at a multiple of the wavelength of the radio frequency. Either 1 or 1/2 or 1/4.
wavelength = speed of light (299792458 metres per second)/ frequency in hz

Feb 26, 2013 | Televison & Video

5 Answers

What are the best arrows to use in archery?


I found this blog that has all the information you need regarding the types of arrows that are used with different types of bows http://bleacherreport.com/articles/280059-how-to-choose-the-best-archery-arrows-that-better-your-skills

Jul 09, 2012 | Archery

1 Answer

HELLO I have recently made an Blue LED writing sign, at close up its fine, but the more further i go away from it , it becomes blurry and hard to read. please help


LED's have a very specific wave length that defines the color, and blue isn't that sharp. Plus the type of LED's itself may not be of the right angle. Together this makes for looking fuzzy at a distance. A different color blue (different manufacturers have slightly different colors of blue and each are slightly different wave lengths) and/or a different angle of lens might improve the legibility of the sign.

By the way this is also true to a point about octics, your eyes for the color blue. Think of how much harder it is to read lighter blue ink print than it is to read either black or red....

May 17, 2011 | Kitchen Appliances - Others

1 Answer

What are the differences between the laser systems?


The main difference in the laser systems at home or at the clinic is the wave length of the laser beam, which relates to the depth of the light penetration and the ability to deal with different skin shades. Most laser unwanted side effects like skin discoloration happens when the skin is treated by the wrong type of laser.

Nov 23, 2010 | Health & Beauty

2 Answers

29 cobra ltd c.b. wont transmit or receive. mic antenna coax are good


make sure the RF gain is all the way up, and the dynamic is all the way up or most of the way up.

When you say the antenna is good, have you checked the SWR's and or have tuned the antenna to be the correct length for the radio? If this has not been done ever, your radio could be a brick.

Also, make sure the PA/CB switch is on CB. if its on PA(public address) it will not receive or transmit because it is on PA mode, which if you have one hooked up, a PA speaker, then you can talk to people through it out side your car.

Also, make sure the S/RF SWR CAL switch, its the first one on the left, is all the way up on S/RF. this is your signal/ receive setting for the meter. When you hold the key, does this needle swing forward? As well does the RX/TX light turn red? If it does, then the radio is transmitting.

There is another light on the radio under the TX/RX light. It is the Antenna warning light. If this light comes on when you transmit, or has come on all the time during transmit, and now it doesn't then the radio is a brick. That is a warning light. It means that the antenna is not matched, or has not been tuned to the radio. If this has not been done ever, you have killed the radio.

Here is why. When you transmit, you are sending off a radio wave. This radio wave, at 27mhz, is about 36 feet long. In order for the wave to radiate off the antenna, the length of the antenna has to match the length of the radio wave. Now it does not have to be a full 36 feet. It can be an exact multiple of 36 feet. In other words it can be 1/4( one quarter) or 5/8(five eights) of a wave in length. 1/4 of a wave is 108 inches, or 9 feet long. Your antenna is still probably does not seem 9 feet long, but there is usually a loading coil that is not exposed making up the rest of the length of antenna, so that it matches the length of the radio waves electrically. If you were to stretch the coil out with the antenna whip, it would be 9 feet long.

When the antenna does not match the wave length, part of the RF energy does not leave the antenna, and goes back down the feed line(coax) and hits the transmit transistor. Prolonged reflection to the transmit transistor, otherwise known as the final will blow it out. As well depending on how bad the length was off, the more off, the more reflect energy, the more RF energy you are blasting back into the radio, and this causes more things then just the transmit to blow out. Some time the receive goes along with it when it finally goes.

So if the RF gain is up all the way, which by the way is basically how much receive you have, and there really is no reason to have it down at all, and the CB/PA switch is on CB and the needle does not swing forward when its on the S/RF setting, chances are that the radio is now no good.

It is fixable, but if there are no CB shops near you then you will have to send it out. And Cobra will not cover this under warranty because its stated in their warranty that they do not cover damage due to high SWR.

Apr 06, 2010 | Cobra 29 LTD CB Radio

1 Answer

At first my Plextor PX-760A can read CD, DVD5, and DVD9. But after couple of years, it reads CD and DVD9 not DVD5 anymore


this is called aging effect. different-2 wave lengths are required to read and write different type of disc. these different wavelength rays are emitted by a lense iside every dvd player or drive so as the time passes lense weakens its ability and can not emit the required wavelength to read that type of disc.
so no need to panic either u repair ur dvd drive lense or get it replaced with a new one. hope it willl be helpfull.

Apr 06, 2010 | Plextor PX-760A DVD RW Dual Layer Burner

1 Answer

10 year old 35'' Zenith TV will not respond to an RCA remote control. What code do I enter in order for it to communicate?


these codes are built and programmed into the remote and directly into the recievers. unless you have a universal remote then this rca remote will not work. they both communicate on different wave lengths and under different recievers.

Feb 17, 2010 | Televison & Video

2 Answers

Science


the light is fractured to a certain extent that when freyed it will split apart but i am a 13yr old so i probably have virtually the same knowledge of this subject that you do.



Good

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