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 ...
有些學(xué)生籠統(tǒng)的把GCSE大考比作中考。但就重要性而言，GCSE大考成績可比國內(nèi)的中考成績要重要許多。A-level課程成績直接決定小伙伴們能否有資格申請(qǐng)英國大學(xué)。如果小伙伴們?cè)贕CSE階段有過相關(guān)課程的學(xué)習(xí)經(jīng)驗(yàn)和知識(shí)...
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...
Two-Slit Interference Patterns For two-source interference fringes to be observed, the sources of the wave must be: Coherent?(constant phase difference) Monochromatic?(single wavelength) When two w...
Young’s Double-Slit Experiment Young’s double-slit experiment demonstrates how light waves can produce an?interference pattern The setup of the experiment is shown below: Young’s double-slit experi...
