material value
91U-value — /yooh val yooh/, n. a measure of the flow of heat through an insulating or building material: the lower the U value, the better the insulating ability. Cf. R value. [1945 50; U, symbol for internal energy] * * * …
92second half-value layer — the additional thickness of material needed to reduce the intensity of a radiation beam from one half to one fourth of its original value. Cf. half value l …
93U-value — U val•ue [[t]ˈyuˌvæl yu[/t]] n. bui a measure of the flow of heat through an insulating or building material: the lower the U value, the better the insulating ability Compare R value • Etymology: 1945–50; U, symbol for internal energy …
94sentimental value — ► sentimental value value of an object deriving from personal or emotional associations rather than material worth. Main Entry: ↑sentimental …
95monetary value — noun the property of having material worth (often indicated by the amount of money something would bring if sold) the fluctuating monetary value of gold and silver he puts a high price on his services he couldn t calculate the cost of the… …
96obscene material — n. According to a Supreme Court decision, material is obscene, and hence not protected by the free speech provision of the First Amendment if it has three elements: It must have prurient appeal, as decided by the average person applying the… …
97R-value — noun Etymology: probably from thermal resistance Date: 1948 a measure of resistance to the flow of heat through a given thickness of a material (as insulation) with higher numbers indicating better insulating properties compare U value …
98U-value — noun Etymology: unit Date: 1949 a measure of the heat transmission through a building part (as a wall or window) or a given thickness of a material (as insulation) with lower numbers indicating better insulating properties compare R value …
99R-value — /ahr val yooh/, n. a measure of the resistance of an insulating or building material to heat flow, expressed as R 11, R 20, and so on; the higher the number, the greater the resistance to heat flow. Cf. U value. [1945 50; R, symbol for… …
100Minimum efficiency reporting value — Minimum efficiency reporting value, commonly known as MERV rating is a measurement scale designed in 1987 by the American Society of Heating, Refrigerating and Air Conditioning Engineers (ASHRAE) to rate the effectiveness of air filters. The… …
