What is the cause of color? Why do some objects appear blue to the eye while others appear red? Is the color of a surface at room temperature related to the radiation it emits?
What will be an ideal response?
Light (or visible) radiation consists of narrow bands of colors from violet to red. The color of a surface depends on its ability to reflect certain wavelength. For example, a surface that reflects radiation in the wavelength range 0.63-0.76 ?m while absorbing the rest appears red to the eye. A surface that reflects all the light appears white while a surface that absorbs the entire light incident on it appears black. The color of a surface at room temperature is not related to the radiation it emits.
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What is the cause of milk sickness?
What will be an ideal response?
Answer the following statement(s) true (T) or false (F)
1. Most access control systems are connected to the buildings network through a CAT 5 cable. 2. Wiring and cabling for all access control systems must comply with Article 300 of the National Electrical Code. 3. Most door and window contacts are “normally closed”. 4. The installation of class two power sources must comply with Article 725 of the National Electrical Code. 5. The type of sensing device to use in a access control systems typically depends on the layout of the building and the detail in which you need protection.
An adaptation of the original quality concepts to better fit the needs of business and education is called _______
A) Tqm B) Tqa C) Rem D) Am/fm
How many millimeters are there in 0.096 meters?
Fill in the blank(s) with the appropriate word(s).