The effect given when light is transmitted through a specular surface and then strikes a diffuse surface If the specular surface is of high curvature the light will be tend to be focused When this effect is taken into account, rendered scenes involving liquids or glass are much more photorealistic Caustics can also arise when light is reflected from a specular surface The classic example is the caustic on the surface of a liquid Refraction may make it happen too The caustic shape is the envelope of the reflected rays
harsh or corrosive in tone; "an acerbic tone piercing otherwise flowery prose"; "a barrage of acid comments"; "her acrid remarks make her many enemies"; "bitter words"; "blistering criticism"; "caustic jokes about political assassination, talk-show hosts and medical ethics"; "a sulfurous denunciation"
a strong alkali capable of attacking and damaging other substances Sodium hydroxide, used in relaxers, is caustic and can severely damage the hair and skin
any chemical substance that burns or destroys living tissue of a substance, especially a strong acid; capable of destroying or eating away by chemical action
Any strong alkaline substance that has a corrosive or irritating effect on living tissue A substance that is chemically similar to sodium hydroxide (NaOH)
Caustic chemical substances are very powerful and can dissolve other substances. caustic cleaning agents Remember that this is caustic; use gloves or a spoon. = corrosive
(Sodium Hydroxide, NaOH and derivatives) The active ingredient in an alkaline bath, generally with a pH higher than 10, which removes aluminum from used extrusion dies by etching The primary ingredient, Caustic Soda (NaOH), dissolves the aluminum alloy by chemical reactions with no affect on the die steel
A detrimental coffee taste sensation characterized by burning, sour sensation on the posterior sides of the tongue Caused by alkaloids increasing the sourness of the acids in combination with a high percentage of salts