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optics
Optics is the branch of physics which involves 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 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.
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Laser RangefindersScout DX 1000 ARCDescription:Easy arithmetic: one button, four hooves in the air- 6x magnification- E.S.P. (Extreme. Speed. Precision.) Provides up to 1/2 yard accuracy and 1/10th yard display precision- Built in inclinometer provides ARC- Compatible with magnetic...
Looking to trade a once mounted m1-b ultimak upper, and also a only inserted 9396 polytech 75rnd Chinese drum. Drum only has storage wear as with the ultimak. Looking for a rs regulate 301-303 with micro dot upper and cheap micro dot(primary arms etc) plus cash. Or straight trade all for a mro...
For sale is a completly custom Gen 4 Glock 19. Parts are as follows: Nomad 9 serialized Glock 19 frame, with factory stippled grip and thumbrests, with 3 separate backstraps for both size and more standard 1911 grip angle. Brownells Gen4 Glock 19 slide with RMR optics cutout. Glock Gen 5 Glock...
Clearing out my safe and this was a take off from an ar15 that worked great but was replaced with another scope
Was worried bout the brand but the scope zero'd easily and held true
I'm selling my 10.5" Bravo Company Upper to fund another product, it has set in the safe and only has been shot once.
10.5" Bravo Company Upper
Strike Industries Mega Fins Hand Guard, Part# MEGAFINS-12FSP with box
Noveske Pig KX5, Part #KX5-556 with box
Vortex SPARC AR, Part# SPC-AR1 with box...
Diamond Razor Edge Compound Bow
In great shape. Comes loaded with 3 pin sight, quiver , release and forearm guard.
Fully adjustable, set at 26.5" draw length and 45lb draw weight. Asking $125 obo. Possible trade for 22 revolver or rifle, griswold cast iron, ceramic crocks or silver bullion...
Selling my Cabelas Outfitter Frame Pack. In great shape. Only been used once. Dont remember the exact model but it has the water pack(has not been used), rifle/bow holder, and the rain fly. Asking $125 obo , located in centralia.
Focuscamera through ebay has some vortex cf-4302 10x42 binoculars for 90 bucks. They are currently 150 on amazon. Seems like a good price. I don't have these so cant comment on quality.
Vortex Optics CF-4302 Crossfire 10x42 Binocular 875874005808 | eBay
M4 in 5.56 with Trijicon Acog and M4 in .22lr with Nikon Rimfire scope.
Both are in excellent condition with the 22 being the newer one. What you see in the pics is what you get. Prefer to sell as a set.
$2100.00
Money Market Pawn for transfer
BNIB Glock G19 Gen 5 MOS. Never fired, and hate to sell it. I bought it a bit ago and haven’t had an opportunity to go shoot it and now I need the money. I will buy this gun again when I have the chance. Has NO front cutout on the mag well, and has the front slide serrations which I think...
CZ P 10 F OR -SOLD-
70-80 rounds fired
fired perfectly every round and accurate
with no jams.
480.00
also have a P 10 C 40 rounds fired 370.00 pictured on the right
both guns purchased last month brand new.
no trades meet at local FFL
BNIB LEUPOLD MARK 6, 3-18 WITH THE TREMOR 3 RETICLE. INCLUDES A SOFT COVER, SWITCHVIEW LEVER, AND WARNE SCOPE MOUNT. RETAILS FOR $3,250.00 JUST FOR THE OPTIC. THIS IS BRAND NEW, MOUNTED, UNUSED. MSRP FOR ALL IS $3,500.00. ASKING $2,300.00 (obo) SHIPPED OR YOU CAN PICK UP. COMES IN ORIGINAL BOX...
Purchased this in Feb.
Mocked it up and decided to go another direction.
Bergara hmr b14 6.5cm
20 moa base
1 factory 5 round mag
Box, paperwork
Will include atlas rail adapter as well (if I can find it)
Paid $999 at cabelas
$800 buyer pays transfer in Tigard at Oregon Rifleworks or tigard pawn...
US Optics SN-4 1.5-6x with JNG MIL reticle
In great condition with very little use, original factory packaging with QC/data sheet. Priced to move at $725 shipped! [TRADED]
I bought this scope about 7 years ago, mounted it on my AR and shot ~200 rounds at the range, and it's been sitting in the...
I’m no longer using this Scope and it just sits in my Safe (back up Scope). It’s a U.S. Optics LR-17 FFP 3.2-17x MIL/MIL, MIL Scale GAP reticle, Red Illumination and comes with Badger Ordance Low Rings, And lens caps. This is a awesome Scope!!! Awesome company, U.S. Made, Super clear Glass, And...