0
How many center frequencies exist in the jtids mids frequency spectrum?
Wiki User
∙ 10y agoWant this question answered?
Be notified when an answer is posted
Add your answer:
Earn +20 pts
How is the electromagnetic spectrum useful?
Visible light, which lets humans and other animals see, is part of the electromagnetic spectrum. RF (radio frequency) waves are part of the electromagnetic spectrum. RF transmissions carry radio and television broadcasts. They have the lowest frequency. Microwaves are part of the electromagnetic spectrum. X-Rays are part of the electromagnetic spectrum and have the highest frequency..
Do sound waves exist even if you can't hear them?
Yes, sound waves exist which are not audible to the human ear. Humans can hear sound waves having frequency between 20 - 20,000 Hz. Other all frequencies lie outside our hearing range and are called ultrasonic or supersonic waves.
What is the name for all electromagnetic waves that exist?
The Electromagnetic Spectrum.
Does photoelectric effect take place below threshold frequency?
The threshold frequency for photoelectric emission is the smallest possible frequency a photon can have to be absorbed/emitted by an electron moving between energy levels in an atom. Explanation: Since electrons can't exist /between/ energy levels, and each electron would be moved a very specific amount by any given photon, only photons of certain frequencies can be properly absorbed/emitted, necessitating a minimum frequency.
What is a non stationary signal?
A non-stationary signal is one whose frequency changes over time; e.g. human speech where frequencies vary over time depending on what words or syllables you are pronouncing. On the contrary, you have stationary signals where frequencies don't change over time; e.g. the signal: cos(20*pi*t)+cos(50*pi*t)+cos(200*pi*t) where all of the frequency components (20*pi, 50*pi, 200*pi) exist at all times.
What is the chemical compound for pink?
This does not exist. The color pink, is a specific frequency range in the electromagnetic spectrum of visible light. Various chemical compounds exist which reflect this frequency range, and appear pink as a result.
Why intermediate frequency are constant?
The frequency spectrum has been distributed for various purposes. Otherwise, the people may use the frequencies of their choice & there will be wide range of interference. So, in order to ensure proper reception of signals, the standards have been fixed for the transmission of frequencies & also for the intermediate frequency because if the intermediate frequency is varied the overall frequency value will also vary. The intermediate frequency value should be so designed that it should not lie within the range of mixer stage. Otherwise, there is the production of noise signal due to the interference of mixer frequency & intermediate frequency. Also, the intermediate frequency should not be too high. Otherwise, it will reduce the selectivity of the receiver because of increase in bandwidth. Considering all these factors 455 khz is the most suitable intermediate frequency value for an AM receiver.
Objective in regulating the use of radio frequency spectrum?
The objective is to make it possible for the maximum number of users to co-exist within the existing radio spectrum, without interfering with each other. Radio spectrum is like land . . . no more of it is being manufactured.
Are radio waves the shiortest wavelength of all EM waves?
Radio waves have almost the lowest frequency of any electromagnetic wave, but as the frequency, f, is related to the wavelength, l , and the speed of light, c, by the equation:f=c/lthis means that they have one of the longest wavelengths of all electromagnetic waves.On most illustrations of the electromagnetic spectrum, you will see Radio waves shown as the lowest frequencies of all. In fact, there are lower frequencies called ELF (extremely low frequency) waves. The most commonly encountered ELF waves are those that result from 50/60Hz electricity power lines, with wavelengths of some 6000km.In principle, though, there is no reason to suppose that there is a longest possible wavelength wave on the electromagnetic spectrum - electromagnetic waves may exist that have wavelengths of the order of light years, for example.
A certain dog whistle operates at 23.5 kHz while another brand operates at an unknown frequency When they play together they have a frequency of 5000 Hz Estimate the operating frequency of Brand X?
Sum or difference - so 28.5 or 18.5 KHZ All three frequencies still exist, not just the sum or difference.
What is the entire range of energy waves that exist in the universe?
This might be a description of spectrum analysis. In spectrum analysis, we look at a range of radiated electromagnetic energy, and arrange it by frequency. By looking at what is there (and what is not), we can derive a "fingerprint" of sorts that can be compared to known spectral displays. We can thus discover what is generating the given spectrum we are analyzing. This usually applies to visible light and frequencies close to that range of energies. In the world of radio, by applying spectrum analysis in given situations, we can discover where radiated energy from a source is "going" in the spectrum. For instance, a satellite launched by an "unfriendly" nation might be transmitting data across a range of frequencies using spread spectrum technology. By pointing a big antenna at it and looking at the range of emissions, we can see all the things it is transmitting across that range of frequencies. Then we can consider how the signals are being transmitted, and if they are in digital form, we turn on the big supercomputers and see if we can crunch the data to make it into something that makes sense.
What does the spectrum of a star determine?
Elements that exist in the start
How is the electromagnetic spectrum useful?
Visible light, which lets humans and other animals see, is part of the electromagnetic spectrum. RF (radio frequency) waves are part of the electromagnetic spectrum. RF transmissions carry radio and television broadcasts. They have the lowest frequency. Microwaves are part of the electromagnetic spectrum. X-Rays are part of the electromagnetic spectrum and have the highest frequency..
Do sound waves exist even if you can't hear them?
Yes, sound waves exist which are not audible to the human ear. Humans can hear sound waves having frequency between 20 - 20,000 Hz. Other all frequencies lie outside our hearing range and are called ultrasonic or supersonic waves.
What is the name for all electromagnetic waves that exist?
The Electromagnetic Spectrum.
Is the electromagnetic spectrum harmful?
Certain parts of it can be. High frequency waves such as X-rays, gamma rays, and ultraviolet light can cause radiation burns and cancer. At the same time, life could not exist without the electromagnetic spectrum. The sun heats the earth through electromagnetic waves, and the light that drives photosynthesis is also part of that spectrum. Visible light, which allows us to see, is in the same range.
Does photoelectric effect take place below threshold frequency?
The threshold frequency for photoelectric emission is the smallest possible frequency a photon can have to be absorbed/emitted by an electron moving between energy levels in an atom. Explanation: Since electrons can't exist /between/ energy levels, and each electron would be moved a very specific amount by any given photon, only photons of certain frequencies can be properly absorbed/emitted, necessitating a minimum frequency.
