The definition of Ultrasound is very short wavelengths of sound used in a similar way to x-rays. The reason that ultrasound is used is the fact that sound does can be used for getting moving pictures of internal bits of the body that x-rays can show as accurately
A ray is a narrow beam of light.
A light beam or beam of light is a narrow cone of light energy radiating from a small source. In optics, a ray is an idealized narrow beam of light.
a narrow projection of light energy radiating from a sourse into a beam
Because the beam can damage other parts of the body and tissue.A narrow beam allows focus on the treatment area with minimal additional damage.
A laser beam pointed at the skin will produce ultrasound as a side effect by interacting with the tissues. This is how a photoacoustic tomography device works and is used for imaging tissues below the skin. "technology works on a near infrared laser that is fired into tissue. The laser's energy, once absorbed by the tissues, generates heat, which in turn generates the photoacoustic signals that are picked up by an ultrasound transducer." coool.
get something narrow like a beam and balance on it, that makes it a balance beam..
A laser beam (which is shot through a ruby or gas to make it so fine)
Ray?
A laser
The polyps are located and removed with a wire snare, ultrasound, or laser beam
X-ray technicians use colimators to narrow the x-ray beam to: - lower the dose the patient gets - lower the effect of scattered radiation
The beam is a narrow beam of covered wood set a few feet off the floor. You do basically everything you do on floor on it, but in a more limited area.