Film
(n.) A thin skin |
Film
(n.) A slender thread, as that of a cobweb. |
Film
(v. t.) To cover with a thin skin or pellicle. |
Focus
(n.) A point in which the rays of light meet, after being reflected or refrcted, and at which the image is formed |
Focus
(n.) A point so related to a conic section and certain straight line called the directrix that the ratio of the distace between any point of the curve and the focus to the distance of the same point from the directrix is constant. |
Focus
(n.) A central point |
Focus
(v. t.) To bring to a focus |
Fresnel lens
() See under Lens. |
Lenses
(pl. ) of Lens |
Lens
(n.) A piece of glass, or other transparent substance, ground with two opposite regular surfaces, either both curved, or one curved and the other plane, and commonly used, either singly or combined, in optical instruments, for changing the direction of rays of light, and thus magnifying objects, or otherwise modifying vision. In practice, the curved surfaces are usually spherical, though rarely cylindrical, or of some other figure. |
Photo
(n.) A contraction of Photograph. |
Photo-
() A combining form from Gr. fw^s, fwto`s, light |
Photo-electric
(a.) Acting by the operation of both light and electricity |
Photo-electrotype
(n.) An electrotype plate formed in a mold made by photographing on prepared gelatine, etc. |
Photo-engraving
(n.) The process of obtaining an etched or engraved plate from the photographic image, to be used in printing |
Photo-epinasty
(n.) A disproportionately rapid growth of the upper surface of dorsiventral organs, such as leaves, through the stimulus of exposure to light. |
Soft
(superl.) Easily yielding to pressure |
Soft
(superl.) Not rough, rugged, or harsh to the touch |
Soft
(superl.) Hence, agreeable to feel, taste, or inhale |
Soft
(superl.) Not harsh or offensive to the sight |
Soft
(superl.) Not harsh or rough in sound |
Soft
(superl.) Easily yielding |
Soft
(superl.) Expressing gentleness, tenderness, or the like |
Soft
(superl.) Effeminate |
Soft
(superl.) Gentle in action or motion |
Soft
(superl.) Weak in character |
Soft
(superl.) Somewhat weak in intellect. |
Soft
(superl.) Quiet |
Soft
(superl.) Having, or consisting of, a gentle curve or curves |
Soft
(superl.) Not tinged with mineral salts |
Soft
(superl.) Applied to a palatal, a sibilant, or a dental consonant (as g in gem, c in cent, etc.) as distinguished from a guttural mute (as g in go, c in cone, etc.) |
Soft
(superl.) Belonging to the class of sonant elements as distinguished from the surd, and considered as involving less force in utterance |
Soft
(n.) A soft or foolish person |
Soft
(adv.) Softly |
Soft
(interj.) Be quiet |
Soft-finned
(a.) Having the fin rays cartilaginous or flexible |
Soft-headed
(a.) Weak in intellect. |
Soft-hearted
(a.) Having softness or tenderness of heart |
Soft-shell
(a.) Alt. of Soft-shelled |
Soft-shelled
(a.) Having a soft or fragile shell. |
Soft-spoken
(a.) Speaking softly |