plz mention rays other than x rays and ultra sounds
2007-01-09 03:11:01 · 9 answers · asked by sam 1 in Science & Mathematics ➔ Physics
NO OTHER RAY in the Electromagnetic spectrum exists!!!! other than those which you mentioned.
X rays and Ultra sounds have high frequencies and low wavelength which allow them to pass through some parts of the body. Those parts through which they donot pass we get reflected images.
Although Gamma rays have the capability to pass through any part of th human body but are extremely dangerous.
Even moderate doses prove fatal!
MRI is a different technique though.........it does not pass through our body.Its magnetic resonance!
2007-01-09 03:15:35 · answer #1 · answered by Som™ 6 · 1⤊ 0⤋
Look up MRI scans.... They use radio waves in conjunction with magnetic fields.
And for the love of all things livng, do not say gamma rays, unless you have a strong desire to cause severe radiation poisoning and inevitable death.
**additional info.....****
An MRI does use EM radiation. First, a magnetic field is applied, which aligns all of the protons in hydrogen atoms into said EM field. Then, a radio signal is sent towards the body, which is deflected back at the detector by the spin-enhanced protons. The radio signals will otherwise pass through the body unchanged. The radio detector then sends the information to a computer, where it is processed and turned into images. Contrast occurs as a result in different reflected radio wave densities, resulting from different H-proton densities.
The EM spectrum:
Gamma
X-rays
UV
Visible
Infrared
Microwave
Radio
Long wave
2007-01-09 03:17:54 · answer #2 · answered by Jess4352 5 · 0⤊ 0⤋
There are three kinds of "rays" that I remember. Gamma, beta, and Alpha rays. "X-rays" is very complicating. Its photon energy. There's different reactions that atoms exhibit to produce x-rays. X-rays aren't what you think they are. As for Imaging that doesnt harm the body? MRI is Magnetic Resonance Imaging and Sonograms (US) is just that, sonography. Echos. Like radar.
2007-01-10 09:52:04 · answer #3 · answered by Anonymous · 0⤊ 0⤋
MRI?
http://health.howstuffworks.com/mri1.htm
2007-01-09 03:19:20 · answer #4 · answered by Yahzmin ♥♥ 4ever 7 · 0⤊ 0⤋
MRI, magnetic resonence imaging. But it's not a ray.
2007-01-09 03:23:22 · answer #5 · answered by Anonymous · 0⤊ 0⤋
MRI,Sonograph
2007-01-09 04:47:32 · answer #6 · answered by Sudhakaran V 1 · 0⤊ 0⤋
You named the two that I know. I dont know of any others.
2007-01-09 03:15:04 · answer #7 · answered by Anonymous · 0⤊ 0⤋
Are you talking about a CAT Scan, PET Scan...???
2007-01-09 03:23:04 · answer #8 · answered by Inquisitive 2 · 0⤊ 0⤋
gamma?
2007-01-09 03:15:24 · answer #9 · answered by E 5 · 0⤊ 0⤋