How is illuminance measured?
What will be an ideal response?
?Illuminance is the total amount of visible light incident upon a point on a surface from all directions above the surface. It is a measure of light intensity striking a surface.One lumen of luminous flux uniformly imposed on one square foot of area results in an illuminance of one footcandle. The level of illuminance is commonly measured with a luminance meter, often referred to as a light meter. It has a photoelectric panel connected to a microammeter and electronic control circuitry and is calibrated to read in footcandles or lux. Some types have a remote sensor. The meter is held so the photoelectric panel is parallel to the plane of the area being tested.
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Generally, volume expansivity ? and isothermal compressibility ? depend on T and P. Prove that: 
What will be an ideal response?
In slip-form construction, the concrete is contained and shaped by a form that is moved _____.
a. along a track b. continuously c. up and down d. intermittently
Colostrum contains important antibodies for the calf
Indicate whether the statement is true or false
The Free Soilers were most concerned that one of the adverse long-term effects of extending slavery in the western territories would
A. be an indefinite delay in the admission of western territories as states in the union. B. cause costly wage labor to wither away and, thus, close the opportunity for the American worker to own property. C. enable, through enhanced profits, and permit small farmers to purchase more land. D. be to undermine the moral case against slavery. E. None of these choices are correct.