Shades and Reflectors Science Project Idea

Science project idea on why shades and reflectors are used.

Shades and Reflectors- Science Project Idea

Why shades and reflectors are used.- The effectiveness of the lighting of a room may be increased by the proper use of shades and reflectors.In lighting a room several things must be kept in mind: that strong direct rays of light are injurious to the eyes; that in some cases a general illumination of the room is desired; and that in other cases certain parts or objects in the room should be more brilliantly lighted.

Give examples showing when a general illumination is desired; when special parts of the room should be better lighted.All these aims are accomplished by means of the use of shades and reflectors.Can you recall any room that has seemed to be satisfactorily lighted in which there was not some use made of shades or reflectors?

We sometimes hear the terms, direct and indirect lighting, used. In direct lighting, the rays are reflected in one general direction by the use of an opaque reflector.Individual reading lamps are usually of this type.

By the use of translucent shades which permit some of the rays to pass through, we have what might be called semi- direct lighting.Many halls and meeting rooms, where a general distribution of light is desired, have opaque or partially opaque bowl reflectors by which the rays of light are directed to the white ceiling which in turn reflects them downward throughout the room.If translucent shades are used, considerable light also passes directly outward and downward from the lamp.

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