See Also: Astern - Sailing(gambling)
Dead Astern - Sailing(gambling)
asphenc lens(medicine)
astern(dictionary)
astern(dictionary)
Herbal medicine (botanical medicine, herbology, phytomedicine)(health)
Medicine Lodge Memorial Hospital- Medicine Lodge(health)
Orthomolecular medicine (orthomolecular nutritional medicine, orthomolecular therapy)(health)
medicine(dictionary)
medicine(encyclopedia)

asphenc lens (medicine) and Astern - Sailing (gambling)


asphenc lens (medicine)


asphenc lens
<physics> A lens made aplanatic by grinding the outer zones to a greater radius than the inner zones. Aplanatic condensers can be made in this way. A simple aspheric lens is widely used as a lamp condenser because of its Efficiency in converging light rays to one focal plane.


Astern - Sailing (gambling)


Toward the stern of a vessel, or behind the boat.