Eng - Flashcard 12-6-24

Front

What frequency range is used in medical imaging?

Back

1 MHz to 20 MHz

Front

How do paint pigments create color?

Back

They absorb certain wavelengths and reflect others.

Front

Name one therapeutic application of ultrasound.

Back

Physiotherapy for soft tissue injuries.

Front

What principle enables transducers to produce ultrasound waves?

Back

Piezoelectric effect.

Front

What is a common industrial use of ultrasound?

Back

Non-destructive testing (NDT).

Front

Define ultrasound.

Back

Ultrasound refers to sound waves with frequencies above the audible range for humans, typically above 20 kHz.

Front

What is the Doppler effect?

Back

The change in frequency or wavelength of a wave in relation to an observer moving relative to the wave source.

Front

Explain the photoelectric effect.

Back

The emission of electrons from a material when it absorbs light or electromagnetic radiation.

Front

What is non-destructive testing (NDT)?

Back

A method of testing materials or structures without causing damage, often using ultrasound.

Front

What is the piezoelectric effect?

Back

The ability of certain materials to generate an electric charge in response to applied mechanical stress.