The Manual
REFERENCES http://www.arvindguptatoys.com. “Cool Colours.” http://www. arvindguptatoys.com/toys/coolcolours.html (accessed April 26, 2018). Davis, Jeff. Foundations of Color. Tempe: Tempe Digital, 2015. Christensen, Emily. “Venn Diagram Symbols Explained.” https:// www.lucidchart.com. July 18, 2017. https://www.lucidchart. com/blog/venn-diagram-symbols-explained (accessed April 26, 2018). https://www.exploratorium.edu. “Colored Shadows.” https:// www.exploratorium.edu/snacks/colored-shadows (accessed April 26, 2018).
OBJECTS REQUIRED
One red, blue and green bulb each
Three pieces of bulb sockets
An extension board/spike (preferably with multiple switches)
Card sheet with a hollow circle in the centre
Small thin objects like pencils, pens, sticks
SETTING UP THE ACTIVITY Note : This activity needs to be done under adult supervision. To achieve the best results, it must be set up in a dark room.
Step 1: Fix each bulb into the bulb socket. Do the same with the other two bulbs as well.
Step 2: Now, fix the bulbs into extension board/spike. Note : It is necessary that bulbs are placed right next to each other, so that the distance between them is equal.
Step 3: Place this extension board with bulbs in the dark room. Now plug the board to a main switch. Switch it on. Note : Ideally, no other light should enter the dark room.
Screen/Wall
Step 4: Place the board facing a white screen or a wall in the room.
Step 5: Switch on the individual switches of each coloured bulb. Screen Extension Board with bulbs
Pencil
Step 6: Now place a pencil/ pen in between the screen and the coloured bulbs. Write the new colours you see on the screen/ wall in the Activity Sheet (from Activity Book 1).
Screen/Wall
Step 7: Let’s have some fun with this activity now! Switch off one coloured light bulb. Now place the hollow circle cardsheet in between the coloured light and the screen. Try this with switching off other light bulbs as well. What do you see? Write down your observations on Activity Sheet (from Activity Book 2).
WHAT IS THIS SYSTEM CALLED?
Colour that is experienced directly, as projected light, is classified as additive colour. Additive mixing is the mixing of coloured light. In this system, absence of colour is equal to black as it has no projected light. Thus, the mixing of light can be seen best in a dark environment.
RED, BLUE, GREEN are the primary colours of the additive colour system.
YELLOW, CYAN, MAGENTA are the secondary colours of the additive colour system.
HOW ARE THE NEW COLOURS FORMED? Pull out the tab above to find out!
BLUE and GREEN mix to give CYAN.
GREEN and RED mix to give YELLOW.
RED and BLUE mix to give MAGENTA.
(Card inside the tab)
Let’s understand this system better by taking an example of the BLUE GREEN - CYAN with the help of the cards below,
BLUE
BLUE
CYAN
CYAN
GREEN
GREEN = CYAN, BLUE, GREEN
In the diagram above, “ “ sign tells us all the colours that either has blue or green in it.
BLUE
(GREEN)C = BLUE In the diagram above ”C“ sign tells us colours that does not have green in it.
BLUE
GREEN = CYAN
In the diagram above,“ “ sign only tells us the colour that is common between both blue and green.
GREEN
(BLUE)C = GREEN In the diagram above ”C“ sign tells us colours that does not have blue in it.
Use these cards as reference to solve the activities from Activity Book 3.
Now we know that two different colours mix to give a new colour.
But what happens when three different colours mix?
Based on the diagram above can you guess the new colour?
The correct answer is White! White is the neutral colour which is formed when the different colours combine with one another.
RED and BLUE and GREEN mixes to give WHITE.
Thus, GREEN and MAGENTA (RED and BLUE) also gives WHITE. RED and CYAN (BLUE and GREEN) also gives WHITE. BLUE and YELLOW (RED and GREEN) also gives WHITE.
Let’s play with colours and solve some puzzles. For example: RED
WHITE = RED, WHITE
RED
WHITE = RED, BLUE, GREEN, MAGENTA, CYAN, YELLOW, WHITE
RED MAGENTA
YELLOW
WHITE BLUE
CYAN
GREEN
WHITE consists of MAGENTA, CYAN, BLUE, RED,YELLOW,GREEN All colours that have white and red include red, blue, green, magenta, cyan, yellow and white. As white coloured light is made up of all colours.
Draw the following on a blank page :
BLUE
WHITE
GREEN
WHITE