Search results
Results From The WOW.Com Content Network
Petrichor (/ ˈ p ɛ t r ɪ k ɔːr / PET-ri-kor) [1] is the earthy scent produced when rain falls on dry soil. The word was coined by Richard Grenfell Thomas from Ancient Greek πέτρα ( pétra ) 'rock' or πέτρος ( pétros ) 'stone' and ἰχώρ ( ikhṓr ) , the ethereal fluid that is the blood of the gods in Greek mythology .
LED tubes. LED tube is a type of LED lamp used in fluorescent tube luminaires with G5 and G13 bases to replace traditional fluorescent tubes. [1] As compared to fluorescent tubes, the most important advantages of LED tubes are energy efficiency and long service life. LED tubes are sometimes also referred to as ‘LED fluorescent tubes’.
Geosmin (/ dʒ i ˈ ɒ z m ɪ n / jee-OZ-min) is an irregular sesquiterpenoid with a distinct earthy or musty odor, which most people can easily smell. The geosmin odor detection threshold in humans is very low, ranging from 0.006 to 0.01 micrograms per liter in water. [1]
Petrichor is the earthy scent produced when rain falls on dry soil. Petrichor may also refer to: Petrichor, a song by Phish from the 2016 album Big Boat; Petrichor, an album by 070 Shake, released in 2024; Petrichor, a track on 2017 album Life Is Fine by Paul Kelly; Petrichor (composition), a 2018 orchestral composition by Ellen Reid
Light transmission efficiency is greatest if the tube is short and straight. In longer, angled, or flexible tubes, part of the light intensity is lost. To minimize losses, a high reflectivity of the tube lining is crucial; manufacturers claim reflectivities of their materials, in the visible range, of up to almost 99.5 percent. [10] [11]
Geosmin synthase is approximately 726 amino acids in length and has two distinctive active sites on the N-terminal and C-terminal halves, respectively (in S. coelicor the N-terminal domain consists of amino acids 1-319 while the C-terminal domain exists from 374-726), both of which resembling the sesquiterpene synthase pentalenene synthase.
A 230-volt LED filament light bulb, with a B22 base. The filaments are visible as the four yellow vertical lines. A LED filament light bulb is a LED lamp which is designed to resemble a traditional incandescent light bulb with visible filaments for aesthetic and light distribution purposes, but with the high efficiency of light-emitting diodes (LEDs).
But the need for digit read-out arose with electronic computers in the 1950s with many independent inventions, both in edge-lighting, nixie tubes and other technologies. U.S. patent 2,751,584 for an edge-lit multi-layer digit "Visual readout device" was filed on November 10, 1953, by inventor Carl L. Isborn of Hawthorne, California, for the ...