Gen sci light and sound

Term 1

Optic Communication

method of transmitting information through the use of light waves, typically involving fiber optics, which allows

for high-capacity communication systems due to

their extremely high carrier frequencies and the

distinct characteristics of optical signals

Fiber Optic Communication

very thin strands of glass or plastic that transmit information using light pulses.

Total Internal Reflection

occurs when light repeatedly

bounces inside a material without escaping.

This allows light to travel through fiber optic cables with

very little signal loss.

Infrared light

Remote controls use ____ which is invisible to the human eye

Laser

Produces a narrow, highly concentrated beam of light

Sound

Mechanical wave that carries information. Can be converted into electrical or digital signals

Speaker

transducer that changes electrical energy

from an amplifier or audio source into mechanical

vibrations (sound waves) that travel through the air

and reach our ears

Gps

uses radio waves, which are part of the

electromagnetic spectrum, to determine the

exact location of a receiver on Earth.

SONAR

works by sending sound waves into the water.

When the waves encounter an object, such as a submarine or

the ocean floor, they are reflected back as an echo.

Echo sounding

It measures the depth of rivers, lakes, and oceans.

It calculates how long sound waves take to return

after reflecting from the seabed.

Ultrasound

High-frequency sound waves bounce off

organs and tissues to create real-time images

inside the body.

Doppler Ultrasound

safe, painless test

that uses sound waves to check how blood

moves through your arteries and veins

LITHOTRIPSY

High-energy sound waves are focused on

kidney stones to break them into tiny pieces

that can pass naturally .

Optical endoscopy

minimally invasive medical procedure that uses

flexible or rigid tubes equipped with

optical fibers and lenses to look

inside the body's hollow organs and

cavities.

Radiation therapy

uses high-energy rays like X-rays to destroy cancer

cells and shrink tumors by damaging their DNA.