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Lithium batteries produce a higher voltage (3.2–3.7 V nominal), and are thus not a drop-in replacement for AA (alkaline or NiMh) batteries without circuitry to reduce voltage. Although a single lithium cell will typically provide ideal power to replace 3 NiMH cells, the form factor means that the device still needs modification.
Model-aircraft or -boat builders often take much larger currents of up to a hundred amps or so from specially constructed Ni–Cd batteries, which are used to drive main motors. 5–6 minutes of model operation is easily achievable from quite small batteries, so a reasonably high power-to-weight figure is achieved, comparable to internal ...
SharkDefense made the discovery of electrochemical shark repellent effects on May 1, 2006 at South Bimini, Bahamas at the Bimini Biological Field Station. An electropositive metal, which was a component of a permanent magnet, was chosen as an experimental control for a tonic immobility experiment by Eric Stroud using a juvenile lemon shark (Negaprion brevirostris).
The Greenland shark prefers cold water temperatures (-1.1 to 7.4 °C) and deep water (100 to 1,200 m). [28] As an ectotherm living in a just-above-freezing environment, this species is sluggish and slow-moving, with the lowest swim speed and tail-beat frequency for its size across all fish species, which most likely correlates with its very ...
The bull shark does not rear its young; the young bull sharks are born into flat, protected areas. [58] Coastal lagoons, river mouths, and other low-salinity estuaries are common nursery habitats. [5] The male bull shark is able to begin reproducing around the age of 15 years while the female cannot begin reproducing until the age of 18 years. [58]
Lithium–iron disulfide battery; Lithium–sulfur battery; Nickel–lithium battery; Rechargeable lithium metal battery, a rechargeable counterpart to the lithium metal battery; Lithium-ion battery, a rechargeable battery in which lithium ions move from the negative electrode to the positive electrode during discharge and back when charging
The whale shark (Rhincodon typus) is a slow-moving, filter-feeding carpet shark and the largest known extant fish species. The largest confirmed individual had a length of 18.8 m (61.7 ft). [8] The whale shark holds many records for size in the animal kingdom, most notably being by far the most massive living non-cetacean animal.
Lamna ditropis Hubbs & Follett, 1947 (salmon shark) Lamna nasus Bonnaterre, 1788 (porbeagle) †Lamna attenuata Davis, 1888 †Lamna carinata Davis, 1888 †Lamna hectori Davis, 1888 †Lamna marginalis Davis, 1888 †Lamna quinquelateralis Cragin, 1894 †Lamna trigeri Coquand, 1860 †Lamna trigonata Agassiz, 1843; Genus †Lethenia Leriche, 1910