please help me with these questions........?

Question

1.what is the difference between:-
a. X-rays and MRI scanners.
b. CAT(Computer Axial Tomography) / CT scanner and MRI scanners.
c.Computer Scanner and MRI Scanner.
d.RADAR and SONAR.
e.MRI scanner and Microscope.
f.Resistors and IC's.

please help me with these questions pleaseeeeeee.........

Answer 1

All the answers to your questions can be found online if you look for it. Use the following site ..................................

Answer 2

I'll save you a bit of hunting and give some short answers.
Magnetic resonance imaging uses the interaction between radio waves and hydrogen nuclei in a magnetic field. The radio waves are typically in the range of 50-500 MHz, and the usual magnetic field is 15,000 gauss (1.5 Tesla). X-rays are high energy rays produced by impinging electrons onto a heavy metal anode (tungsten) at energies of typically 100 kilovolts or more; the atoms of the body (especially the heavier ones, like calcium) absorb the radiation selectively, casting shadows. The shadows may be captured on film (conventional x-ray), or captured by photomultiplier tubes for numerical processing (CAT scan - stands for Computer Automated Tomography).
RADAR is an acronym for RAdio wave Detection And Ranging. Radio waves, typically 300 MHz - 10 GHz, are radiated toward a target using a directional antenna. Radiation reflected from the target is measured as to elapsed time (gives distance) and angle, and the results are shown on a display device. SOuNd detection And Ranging is the same thing, using sound (which propagates in seawater) instead of radio waves (which don't).
A microscope is an optical device used for examining small things. A good optical microscope can achieve a magnification of about 1000 times. (Try to get much more than that and you run into problems with the wavelength of light.) Microscopes have nothing to do with MRI scanners, discussed previously.
A resistor is a device for impeding or controlling electric current. An integrated circuit is a collection of transistors, resistors, and possibly capacitors and other electronic devices, interconnected by conductive paths (typically aluminum), all fabricated on a single crystal of semiconducting material (usually silicon) using photochemical processes.

Answer 3

xray, exposes a person to radiation from a controlled radium particle beam, MRI scanners, uses a magnetic energy flux, to register an electronic scan of muscle tissue, bone, and organs...

CAT scanners, use computer software to translate the readings received, by an electronic imagery scan...

RADAR bounces an electronic signal through the less packed molecules of air, and receives a bounced back signal throught the air, SONAR, uses electronic energy to bounce a signal through a denser mass of molecules, such as water or packed earth...

is that an MRI scanner and an ELECTRON microscope???

the electronic miscroscope is able to "look deeper" into a thinly sliced specimen, since is "records" what it sees, which is then analyzed by a computer, to help the researcher "see" better...

resistors "resist" or reduce the flow of energie in a piece of electronics, integrated circuits, "increase" the efficience of the energie processed, for more complex computer procecees...

Answer 4

RADOR=RAdar Detction And Ranging
SONAR=SOund Navigation And Ranging
RADOR is used for converting radio signals to ranging
SONAR is used to detect the depth of ocean

Answer 5

RADAR, radio detection is uses electromagnetic (radio) waves to get the location, speed etc of aerial objects. SONAR, sound navigation uses sound waves, largely for underwater navigation purposes, esp in ships and subs

Answer 6

go to howstuffworks.com andyou my find what you want their