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Which type of EM radiation is the safest?
Electromagnetic (EM) radiation includes all forms of radio waves from low frequency, AM radio, FM radio, TV frequencies, short wave frequencies, cell phone frequency/radiation, radar and microwave radiation and higher. These are all generated by some sort of antenna and can be detected and measured by the antenna. EM radiation exists naturally from various sources and mankind has known about it since the late 1800's when we first started learning to produce it and use it for communication.In the 20th century we learned that at very high frequencies (also called very short wave lengths, or microwaves) at high enough power levels it can be used to heat things up and we have been using it for heating foods and cooking.EM radiation used for communications is considered by most scientific and medical authorities to be safe and useful.However radiation from microwaves are known to be harmful and microwave devices are required to provide a locking door (as well as shielding on the doors' window) to prevent the device from operating with the door open.Their is controversy concerning the radiation from the high frequency used by cell phones. The radiating antenna is in very close proximity to the ear and the brain. Once side claims it is hazardous with some proof and the other side insisting their is insufficient proof of anything. There is also statistical research alluding to the fact that the frequency of cancer cases corresponds to the increased presence of communications radiation.
Why are the hairs inside the cochlea different lengths?
The hair cells inside the cochlea are of varying lengths to detect different frequencies of sound. Shorter hairs are sensitive to high-frequency sounds, while longer hairs are sensitive to low-frequency sounds. This organization allows us to perceive a wide range of pitches.
What is the formula for a 40 meter dipole?
The formula to calculate the length of a dipole antenna is 468/frequency in MHz. For a 40 meter dipole, which operates at around 7 MHz, the formula would be 468/7 = 66.85 feet long, or about 67 feet. This would be split into two equal lengths, one for each side of the dipole.
Is sun rays ionising radiation or non ionising?
Some of the sun's rays are ionizing and some not. The portion that is not ionizing is the visible spectrum, anything with longer wavelength (infrared), and a bit of the ultraviolet spectrum. The shorter wave lengths are all ionizing.
Explain how you could change the pitch and frequency of the sound of a guitar?
To change the pitch of a guitar, you can adjust the tension of the strings by using the tuning pegs. Tightening the string increases the pitch, while loosening it decreases the pitch. Changing the frequency involves plucking the string at different points along its length; shorter lengths produce higher frequencies and higher pitches.
How do you Calculate the frequency of 337.1 wavelength of nitrogen laser wave lengths of electromagnetic radiation?
To calculate the frequency of electromagnetic radiation, you can use the formula: frequency = speed of light / wavelength. Given the wavelength of 337.1 nm, first convert it to meters (337.1 nm = 337.1 x 10^-9 meters) and then plug it into the formula along with the speed of light (3.00 x 10^8 m/s) to calculate the frequency in hertz.
Which property spells the difference between infrared and ultraviolet radiation?
Ultraviolet radiation means:ultraviolet: radiation lying in the ultraviolet range; wave lengths shorter than light but longer than X rays. Infrared radiation means: electromagnetic radiation with wavelengths longer than visible light but shorter than radio waves.
What kind of electromagnetic radiation do pulsars emit?
Pulsars emit electromagnetic radiation across a wide range of wavelengths, from radio waves to X-rays and even gamma rays. The most prominent emission is usually in the form of radio waves, which is why pulsars are often observed using radio telescopes.
The entire electromagnetic spectrum is divided into regions by?
The entire electromagnetic spectrum is divided into regions by wavelength or frequency. These regions include radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays. Each region of the spectrum has specific properties and interactions with matter.
What electromagnetic waves have the shortest wave lengths?
huh..
How do you calculate the length of wood or steel needed to make a particular note or frequency for a xylophone?
To calculate the length of wood or steel needed to create a specific note or frequency for a xylophone, you can use the formula: length = (v/2f) where v is the speed of sound in the material and f is the frequency of the note. You can adjust the lengths of the bars accordingly to achieve the desired pitches for each note of the xylophone.
How do you calculate wave lengths?
To calculate the wavelength of a wave, you can use the formula: wavelength = speed of the wave / frequency of the wave. The speed of the wave is usually the speed of light in a vacuum (3.00 x 10^8 m/s). The frequency of the wave can be found by counting the number of wave crests passing a point in one second.
Why do radio waves have the least amount of energy of all electromagnetic wave lengths?
Radio waves are the longest of the electromagnetic waves. Longer waves have less energy in them than shortwaves do. Some of the really short EM waves are so energetic that you can use them to cook food. (Microwave ovens).
Do infrared waves have low or high frequency waves?
Yes. Frequency is the number of cycles per second. Wavelength is how long it takes for the wave to complete one cycle. They are inversely proportional, which means in essence that as one goes up the other goes down.
What is a relationship between frequency and wavelength?
The issue is not frequency and wavelength, a relationship is the problem AM Wave length is longer, than FM Wave length. Shorter wave lengths have a tendency to be shorter in the pm. AM Wave lengths were used before FM wave lengths.
Which type of EM radiation is the safest?
Electromagnetic (EM) radiation includes all forms of radio waves from low frequency, AM radio, FM radio, TV frequencies, short wave frequencies, cell phone frequency/radiation, radar and microwave radiation and higher. These are all generated by some sort of antenna and can be detected and measured by the antenna. EM radiation exists naturally from various sources and mankind has known about it since the late 1800's when we first started learning to produce it and use it for communication.In the 20th century we learned that at very high frequencies (also called very short wave lengths, or microwaves) at high enough power levels it can be used to heat things up and we have been using it for heating foods and cooking.EM radiation used for communications is considered by most scientific and medical authorities to be safe and useful.However radiation from microwaves are known to be harmful and microwave devices are required to provide a locking door (as well as shielding on the doors' window) to prevent the device from operating with the door open.Their is controversy concerning the radiation from the high frequency used by cell phones. The radiating antenna is in very close proximity to the ear and the brain. Once side claims it is hazardous with some proof and the other side insisting their is insufficient proof of anything. There is also statistical research alluding to the fact that the frequency of cancer cases corresponds to the increased presence of communications radiation.
Do gamma rays have more energy than microwaves?
Yes, gamma rays have much more energy than microwaves. Gamma rays are a form of electromagnetic radiation with the highest energy and shortest wavelength in the electromagnetic spectrum, while microwaves have much lower energy and longer wavelengths.
