Search results
Results from the WOW.Com Content Network
Instrument Uses Head Mirror with head band: to focus light into the cavity under inspection; mirror is concave and is used with a Chiron lamp to produce a parallel beam of light; doctor views through the hole (average diameter of mirror is 3 & 1/2" & that of hole is 1/4") Head mounted lights with head band: to focus light into the cavity under ...
Weather stations typically have these following instruments: Thermometer for measuring air and sea surface temperature; Barometer for measuring atmospheric pressure; Hygrometer for measuring humidity; Anemometer for measuring wind speed; Pyranometer for measuring solar radiation; Rain gauge for measuring liquid precipitation over a set period ...
Remote sensing instruments collect data from weather events some distance from the instrument and typically stores the data where the instrument is located and often transmits the data at defined intervals to central data centers. In 1441, King Sejong's son, Prince Munjong, invented the first standardized rain gauge.
Sunset provisions have been used extensively throughout legal history. [2] The idea of general sunset provisions was discussed extensively in the late 1970s. [3] Sunset clauses with an effective extension review process have been argued as a safeguard of democracy to ensure emergency provisions, such as state of emergency, remain temporary. [4]
An advanced emergency medical technician (AEMT) is a provider of emergency medical services in the United States.A transition to this level of training from the emergency medical technician-intermediate, which have somewhat less training, [1] began in 2013 and has been implemented by most states [citation needed].
The heliograph was a simple but effective instrument for instantaneous optical communication over long distances during the late 19th and early 20th centuries. [2] Its main uses were military, surveying and forest protection work. Heliographs were standard issue in the British and Royal Australian armies until the 1960s, and were used by the ...
Burt's solar compass or astronomical compass/sun compass is a surveying instrument that makes use of the Sun's direction instead of magnetism. William Austin Burt invented his solar compass in 1835. The solar compass works on the principle that the direction to the Sun at a specified time can be calculated if the position of the observer on the ...
EMT-Intermediate (state specific, phased out by Sept. 30 2013 however any EMT with this certification before Sept. 30 2013 could still be an intermediate and by the next recert cycle had to switch to AEMT) [56] EMT-Intermediate Advanced (analogous to EMT-Intermediate/99, phased out by Sept. 30, 2013 ) [56]