Physics Lab
Loudspeaker
Electromagnetic Relay
Electromagnetic Induction
X-Rays
Electric Bell
The Casual Astronomer
Calculate the temperature of a
distant star - yes, it is feasible; no gimmick
Look at
your favourite star for a few seconds and then get an idea about its
colour. Afterwards, look at the following table and find the nearest
wavelength that corresponds with the colour.
1) Put the wavelength in the textbox
2)The temperature will be calculated automatically in the other textbox
3) No sophisticated equipment; no complex calculations
| |
|
|
|
|
|
|
| 650nm |
590nm |
570nm |
510nm |
475nm |
445nm |
400nm |
The Colour Maker
Do you know that, each colour you see around you are a combination of just three colours? These three 'major players' are called Primary Colours.
The three primary colours are Red, Green and Blue.
This programme lets you mix them as you wish and produce the colour accordingly.
You will not believe your eyes! you can produce millions of colours, using this tiny programme.
Enter a number less than 256 into each text box and mix; you tap on, one of the millions!