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Ellipsoidal reflector spot (abbreviated to ERS, or colloquially ellipsoidal or ellipse) is the name for a type of stage lighting instrument, named for the ellipsoidal reflector used to collect and direct the light through a barrel that contains a lens or lens train. The optics of an ERS instrument are roughly similar to those of a 35 mm slide ...
A studio portrait, showing the characteristic illuminated triangle on the darker side of the face. Rembrandt lighting is a standard lighting technique that is used in studio portrait photography and cinematography; it is also used in contrast with butterfly lighting [1] It can be achieved using one light and a reflector, [2] or two lights, and is popular because it is capable of producing ...
The reflector affects the quality and directionality of the light output. A reflector is located behind or around the light source in such a way as to direct more light towards the lens or opening. Each unit has a characteristic reflector, used in conjunction with the lens (or lack thereof) to create the desired effect.
A reflecting telescope (also called a reflector) is a telescope that uses a single or a combination of curved mirrors that reflect light and form an image. The reflecting telescope was invented in the 17th century by Isaac Newton as an alternative to the refracting telescope which, at that time, was a design that suffered from severe chromatic ...
A toroidal mirror is a reflector whose surface is a section of a torus, defined by two radii of curvature. [1] Such reflectors are easier to manufacture than mirrors with a surface described by a paraboloid or ellipsoid.
An oblique projection of a focus-balanced parabolic reflector. It is sometimes useful if the centre of mass of a reflector dish coincides with its focus.This allows it to be easily turned so it can be aimed at a moving source of light, such as the Sun in the sky, while its focus, where the target is located, is stationary.
Nike revealed the Team USA track and field kits for the 2024 Olympics on Thursday. They weren't well received.. One picture of the women's kit in particular fomented a fierce backlash from female ...
A Lieberkühn reflector [2] (also known as Lieberkühn mirror [3] or simply Lieberkühn [2] [4]) is an illumination device for incident light illumination (epi-illumination) in light microscopes. It encircles the objective, with the mirrored surface facing towards the specimen. This allows illuminating an opaque object from the side of the ...