• The Magnifying Glass

    A magnifying glass always produces a virtual image larger in size than the object. The image is virtual because, as shown in the diagram below, rays of light must be constructed to pass through the image. This means that v is negative. Because the lens...

    https://astarmathsandphysics.com/ib-physics-notes/optics-and-light/1413-the-magnifying-glass.html

  • The Equation For Thin Lenses

    If we assume a lens has no thickness, the following equation relating the focal length f, the object length u and the image length v can be derived: The following points must be noted. If either of u, v are imaginary then the corresponding values of u,...

    https://astarmathsandphysics.com/ib-physics-notes/optics-and-light/1416-the-thin-lens-equation.html

  • The Muon Experiment

    Muons are leptons – with the same charge but greater mass than an electron. They are readily made in the laboratory, but quickly decay, with an average lifetime of measured in the muons rest frame. Muons, labelled in the diagram below, are created by...

    https://astarmathsandphysics.com/ib-physics-notes/relativity/1452-the-muon-experiment.html

  • The Maths of Youngs's Double Slit Experiment

    Young's double slit experiment, along with the pattern formed on a screen, is illustrated below. We can derive an expression for the distance between successive slits in two different ways. Both use the fact that for a bright fringe, constructive...

    https://astarmathsandphysics.com/ib-physics-notes/waves-and-oscillations/1502-the-maths-of-youngs-s-double-slit-experiment.html

  • Conditioins for Interference Patterns in a Film

    A parallel sided film can produce an interference pattern as a result of the reflections that take place at both surfaces. From point B there are two possible paths to the air air the top. Along path BM in air, after reflection at the air – soap...

    https://astarmathsandphysics.com/ib-physics-notes/optics-and-light/1389-conditions-for-interference-patterns-in-a-film.html

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