Medical Physics (AQA A-Level Physics): Flashcards

$Z = \rho v$ (density × sound speed)

Ultrasound method: 1D image from tissue reflections

Ultrasound method: 2D images using echo brightness

Eye adjusts lens to focus on objects at various distances

Concave lenses

Convex lenses

Mechanical deformation produces electrical charge & vice versa

Above $20$ kHz

Detect colour and detail under bright light

Detect low light intensities, produce black-and-white images