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optics plate
Optics is the branch of physics that studies the behaviour and properties of light, including its interactions with matter and the construction of instruments that use or detect it. Optics usually describes the behaviour of visible, ultraviolet, and infrared light. Because light is an electromagnetic wave, other forms of electromagnetic radiation such as X-rays, microwaves, and radio waves exhibit similar properties.Most optical phenomena can be accounted for by using the classical electromagnetic description of light. Complete electromagnetic descriptions of light are, however, often difficult to apply in practice. Practical optics is usually done using simplified models. The most common of these, geometric optics, treats light as a collection of rays that travel in straight lines and bend when they pass through or reflect from surfaces. Physical optics is a more comprehensive model of light, which includes wave effects such as diffraction and interference that cannot be accounted for in geometric optics. Historically, the ray-based model of light was developed first, followed by the wave model of light. Progress in electromagnetic theory in the 19th century led to the discovery that light waves were in fact electromagnetic radiation.
Some phenomena depend on the fact that light has both wave-like and particle-like properties. Explanation of these effects requires quantum mechanics. When considering light's particle-like properties, the light is modelled as a collection of particles called "photons". Quantum optics deals with the application of quantum mechanics to optical systems.
Optical science is relevant to and studied in many related disciplines including astronomy, various engineering fields, photography, and medicine (particularly ophthalmology and optometry). Practical applications of optics are found in a variety of technologies and everyday objects, including mirrors, lenses, telescopes, microscopes, lasers, and fibre optics.
Like new Ruger 57. Comes with 4 factory 20rd magazines, factory optics plate model PM1104, and a Blackhawk soft pistol case.
I’ll also be willing to sell two boxes of 5.7 ammo for $25 per box if needed. Great deal for someone looking to get into this caliber or add to the collection. Preferred...
Hello all,
Up for sale are some parts/accessories from a Walther PDP I previously sold to fund a hunting rifle build. Prices and items below:
PDP Compensator - Parking Mountain Machining - JTTC
$50
Walther PDP Optics Plate - "02" RMR Footprint
$10
Thanks everyone and please don't...
Hello all,
Up for sale is my like-new Walther PDP 4" Compact pistol. I’ve set this pistol up with what I believe are the best possible accessories and optic costing me over $1,500 (itemized summary listed below). It shoots incredibly flat thanks to the 30%+ reduction in muzzle rise due to the...