Search results
Results From The WOW.Com Content Network
The beams can only be seen through night vision goggles. [9] Each beam can be zeroed independently, and the illuminator's radius is adjustable. The two lasers are tied into one 6-mode switch, which has the following modes:
Predators need not locate their host directly: Kestrels, for instance, are able to detect the faeces and urine of their prey (which reflect ultraviolet), allowing them to identify areas where there are large numbers of voles, for example. This adaptation is essential in prey detection, as voles are quick to hide from such predators.
When seen from below by a predator, the animal's light helps to match its brightness and colour to the sea surface above. Counter-illumination is a method of active camouflage seen in marine animals such as firefly squid and midshipman fish, and in military prototypes, producing light to match their backgrounds in both brightness and wavelength.
Photophores on fish are used for attracting food or for camouflage from predators by counter-illumination. [ citation needed ] Photophores are found on some cephalopods including the firefly squid , which can create impressive light displays, as well as numerous other deep sea organisms, such as the pocket shark Mollisquama mississippiensis and ...
Thayer observed and painted a number of examples, including the Luna moth caterpillar Actias luna, both in its habitual upside-down feeding position, where its countershading makes it appear flat, and artificially inverted from that position, where sunlight and its inverted countershading combine to make it appear heavily shaded and therefore solid. [9]
Currently issued in the USMC, the AN/PEQ-16B helps to consolidate the number of attachments on the hand guards of infantry weapons, including the visible, and infrared lasers, an infrared illuminator, and a white-light illuminator for urban or dark environments where night vision devices may be impractical or not available.
These have light-producing organs (photophores) scattered all over their undersides, creating a sparkling glow that prevents the animal from appearing as a dark shape when seen from below. [11] Counter-illumination camouflage is the likely function of the bioluminescence of many marine organisms, though light is also produced to attract [ 12 ...
The filament can move in all directions and the esca can be wiggled so as to resemble a prey animal, thus acting as bait to lure other predators close enough for the anglerfish to devour them. [8] Some deep-sea anglerfishes of the bathypelagic zone emit light from their escas to attract prey.