THE LAMP CHANGES COLOR

Yellow, almost sunlight fills lying under a table lamp a book. To read easily and pleasantly; but after an hour and a half, and you notice that colors start to get bored. To rectify the situation is very simple: you turn the handle-regulator, and color light changes gradually. From the solar spectrum, you can choose any — from red to dark blue, and you can change not only the colour but also its saturation.

It works I designed a filter for the light. Its principle of operation is based on the subtraction subtractive colors, but the basic difference from others is that the dyes in three colors — yellow, purple and blue and I applied the liquid.

 

The filter design is shown in figure 1. In the cylindrical case fitted with four clear glass, three of which can move along its axis. The movement of the glass is Cam rings. Thus, rotating them, you can change the gap from zero to maximum between any two adjacent Windows.

Liquid dyes the desired concentration is filled into the space between the panes. Changing the gap, thereby changing the color saturation or, in other words, the density of the corresponding color. Well as combinations of any two of the three primary subtractive colors, different densities give all the colors of the spectrum, the total color will be determined by the ratio of the thickness of layers of liquid dye and color saturation — thick layers.

 

 

 

 

R and S. 2. Device plastic fur

 

As dye I used a solution of bichromate (K₂CDF₄) — (yellow), potassium permanganate KMPO₄ (Magenta) ink, and blue “rainbow” to pens. Their concentrations are chosen arbitrarily.