light penetration depth
21Microwave oven — A modern microwave oven …
22Stopping power — For the concept in nuclear physics, see stopping power (particle radiation). Contents 1 History 2 Dynamics of bullets 3 Wound …
23Two-photon excitation microscopy — is a fluorescence imaging technique that allows imaging of living tissue up to a very high depth, that is up to about one millimeter. Being a special variant of the multiphoton fluorescence microscope, it uses red shifted excitation light which… …
24Skin effect — Skin depth redirects here. For the depth (layers) of biological/organic skin, see skin. Skin effect is the tendency of an alternating electric current (AC) to distribute itself within a conductor with the current density being largest near the… …
25Deep diving — The meaning of the term deep diving is a form of technical diving.[1] It is defined by the level of the diver s diver training, diving equipment, breathing gas, and surface support: in recreational diving, PADI define anything from 18 metres / 60 …
26Laser engraving — is the practice of using lasers to engrave or mark an object. The technique can be very technical and complex, and often a computer system is used to drive the movements of the laser head. Despite this complexity, very precise and clean… …
27Remotely operated underwater vehicle — Remotely operated vehicle redirects here. For vehicles operating out of water, see remote control vehicle. ROV at work in an underwater oil and gas field. The ROV is operating a subsea torque tool (wrench) on a valve on the subsea structure. A… …
28Absorption (electromagnetic radiation) — An overview of electromagnetic radiation absorption. This example discusses the general principle using visible light as specific example. A white beam source emitting light of multiple wavelengths is focused on a sample (the complementary color… …
29FN P90 — PS90 redirects here. For the Russian aircraft engine PS 90, see Aviadvigatel PS 90. P90 …
30Underwater archaeology — is the study of past human life, behaviours and cultures using the physical remains found in salt or fresh water or buried beneath water logged sedimentMuckelroy, K., Maritime archaeology. Cambridge University Press 1978. ISBN 0 521 29348 0] . It …
