• Multiple Images

    Multiple Images may be formed by an arrangement of two or more mirrors. Images Formed in Two Mirrors at Right Angles When two mirrors are inclined at right angles we have not only the images and formed by single reflections but in addition two extra...

    https://astarmathsandphysics.com/o-level-physics-notes/194-multiple-images.html
  • Real and Virtual Images

    The image formed by reflection in a plane mirror is described as a virtual image. The image formed by the light that passes through a converging lens is a real image. The term 'virtual image' is used to describe an image formed by rays of light that do...

    https://astarmathsandphysics.com/ib-physics-notes/optics-and-light/1401-real-and-virtual-images.html
  • Gravitational Lensing

    Gravitational lensing is one of the predictions of General Relativity. It predicts that massive objects can act as lenses to shift the position of distant objects or produce multiple images. In Einstein's General Theory of Relativity the path taken by...

    https://astarmathsandphysics.com/university-physics-notes/the-universe-and-cosmology/1678-gravitational-lensing.html
  • Symbols and Notation

    the set of positive integers and zero the set of integers the set of positive integers is less than is greater than is less than or equal to is greater than or equal to is not equal to the set of rational numbers the set of positive rational numbers...

    https://astarmathsandphysics.com/?id=1335:symbols-and-notation&catid=97
  • Definition of Terms Used For Lenses

    The following technical terms occur in discussions of lenses. The curvature of each surface of a lens makes it part of a sphere. The centre of curvature of the lens is the centre of this sphere. The principle axis is the line through the centre of the...

    https://astarmathsandphysics.com/ib-physics-notes/optics-and-light/1391-definition-of-terms-used-for-lenses.html
  • Schrodinger's Model of the Atom

    Electrons can be described by waves, with each electron in a particular state having a particular wavelength and energy. It should be possible therefore to express electrons in atoms, with their discrete energy levels, in terms of waves. Schrodingers...

    https://astarmathsandphysics.com/ib-physics-notes/quantum-and-nuclear-physics/1428-schrodinger-s-model-of-the-atom.html
  • Gravity and Spacetime

    The Newtonian view of space is a rigid three dimensional structure, which can be expressed as three perpendicular directions. Time is separate from the space dimensions. Time permeates all of space, moving at the same rate everywhere. Gravity in this...

    https://astarmathsandphysics.com/ib-physics-notes/relativity/1441-gravity-and-spacetime.html

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