high-energy laser
51High-temperature superconductivity — Unsolved problems in physics What causes superconductivity at temperatures above 50 kelvin? High temperature superconductors (abbreviated high Tc or HTS) are materials that have a superconducting transition temperature (Tc) above 30 K… …
52Laser construction — A laser is constructed from three principal parts:*An energy source (usually referred to as the pump or pump source ), *A gain medium or laser medium , and *Two or more mirrors that form an optical resonator . Pump sourceThe pump source is the… …
53Laser lighting display — A laser lighting display or laser light show involves the use of laser light to entertain an audience. A laser light show may consist only of projected laser beams set to music, or may accompany another form of entertainment, typically a rock… …
54Laser hair removal — Epilation by laser was performed experimentally for about 20 years before it became commercially available in the mid 1990s. Intense Pulsed Light (IPL) epilators, though technically not a laser, use xenon flash lamps that emit full spectrum light …
55Energy shield — An energy shield is a form of technology commonly found in science fiction, but also in development for real life space travel [ [http://space.newscientist.com/article.ns?id=dn11623 feedId=online news rss20 Deflector shields could protect future… …
56High-intensity focused ultrasound — Contents 1 Theory 2 Aiming 3 How HIFU works 4 Method of use …
57Laser-guided bomb — A laser guided bomb (LGB) is a precision guided munition (PGM) that uses semi active laser homing to strike a designated target with greater accuracy than a free fall bomb. LGBs are one of the most common and widespread PGMs, used by a large… …
58High intensity focused ultrasound — HIFU (high intensity focused ultrasound) (sometimes FUS or HIFUS) is a highly precise medical procedure using high intensity focused ultrasound to heat and destroy pathogenic tissue rapidly. It is one modality of therapeutic ultrasound, and… …
59Laser shaft alignment — When two machines are connected together through a shaft coupling, every effort must be made to eliminate misalignment of those shafts which can lead to damage or wasteful loss of energy. Lasers are highly accurate and easy to use in aligning… …
60high-pressure phenomena — ▪ physics Introduction changes in physical, chemical, and structural characteristics that matter undergoes when subjected to high pressure. pressure thus serves as a versatile tool in materials research, and it is especially important in… …
