Cobalt
copper sulphate
glass inner colur is blue because silicon gel is used for that one
I think "Blue" not sure though
Sea is actually not blue its transprent.If you take some water in a transprent glass its transprent.there actually a blue pigment present in there.The blue you see (haha) is the color of the reflected sky above itsunlight have 7 colour .when the sunlight enter in water some of colour will reflaction from water but blue colour is not reflactiol all some of colour will be left in water sothat seawater looking blue.
blue
Purple is a cold colour.. and my favourite!
colour is defined by the reflection of light off a surface. So glass can be said to have no colour as light does not reflect off of it
The colour blue is a primary colour and therefore cannot be made by any other colour.
her favourite colour is blue her favourite colour is blue my fav colour is blue too!
Its Flame Test:it gives golden yellow colour to non luminous flame which is not seen through a blue glass.
Blue Is the Colour was created in 1996-10.