The Doppler Equation Calculating Doppler Shift When a source of sound waves moves relative to a stationary observer, the observed frequency can be calculated using the equation below: Doppler shift...
Uses of The Doppler Effect The?Doppler effect?is important in many key areas of science including: Radar?readings for moving objects Measuring the?rate of blood flow?within a patient Finding planet...
The Doppler Effect When a source of sound, such as the whistle of a train or the siren of an ambulance, moves?away?from an observer: It appears to?decrease?in frequency, i.e. it sounds?lower?in pit...
Resolvance of Diffraction Gratings In order to know if a diffraction grating is able to resolve two wavelengths, the?resolving power?of the diffraction grating must be found This is based on the?Ra...
Rayleigh Criterion Calculations The Rayleigh Criterion can be mathematically described by considering?angular separation?and?single-slit diffraction Angular separation can be calculated using the e...
Diffracting Aperture A circular aperture allows a cone of light to enter a region behind the aperture Examples of circular aperture include: A lens within an optical device such as a camera The pup...
Thin Film Interference Thin film interference causes the iridescence seen in: Nature on peacock feathers Glossy flower petals Soap bubbles The shiny side of a CD Thin layers - or films - of oil on ...
The Diffraction Grating Equation The angles at which the maxima of intensity (constructive interference) are produced can be deduced by the diffraction grating equation: The?lines per m?(or per mm,...
Diffraction Grating Patterns A diffraction grating is a plate consisting of a?very large?number of parallel, identical, close-spaced slits When?monochromatic light?is incident on a grating, a patte...
