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The bold, powerful cry commonly associated with the bald eagle in popular culture is actually that of a red-tailed hawk. Bald eagle vocalizations are much softer and chirpier, and bear far more resemblance to the calls of gulls. Ostriches do not stick their heads in the sand to hide from enemies or to sleep.
A red dot sight is a common classification [1] for a non- magnifying reflector (or reflex) sight that provides an illuminated red dot to the user as a point of aim. A standard design uses a red light-emitting diode (LED) at the focus of collimating optics, which generates a dot-style illuminated reticle that stays in alignment with the firearm ...
Taken from a passenger airplane within seconds apart using a Sony H-9 Digital camera. In infrared photography, the photographic film or image sensor used is sensitive to infrared light. The part of the spectrum used is referred to as near-infrared to distinguish it from far-infrared, which is the domain of thermal imaging.
A view through a Tasco ProPoint red dot sight. The mid- to late 1970s saw the introduction of what are usually referred to as red dot sights, a type that gives the user a simple bright red dot as an aiming point. The typical configuration for this sight is a compact curved mirror reflector design with a red light-emitting diode (LED) at its focus.
In mid-May, a couple of Colorado kids had the moment of a lifetime when a herd of elk wandered next to their soccer game. One of the elk--a young male-- even stopped to observe, so the kids took a ...
A view through an EOTech 512 holographic weapon sight. A holographic weapon sight or holographic diffraction sight is a non- magnifying gunsight that allows the user to look through a glass optical window and see a holographic reticle image superimposed at a distance on the field of view. [1] The hologram of the reticle is built into the window ...
A sight or sighting device is any device used to assist in precise visual alignment (i.e. aiming) of weapons, surveying instruments, aircraft equipment, [1] [2] optical illumination equipment or larger optical instruments with the intended target. Sights can be a simple set or system of physical markers that serve as visual references for ...
Aimpoint CompM2. Colt M4 carbine with M68 Close Combat Optic and back-up sight. The CompM2 is a battery-powered, non-magnifying red dot type of reflex sight for firearms manufactured by Aimpoint AB. It was first introduced in the U.S. Armed Forces in 2000, [1] designated as the M68 Close Combat Optic (M68 CCO; NSN: 1240-01-411-1265).