The set consists of 7 coloured filters with a diameter of 11 cm each: red, orange, yellow, green, blue, indigo and violet. The filters correspond to the different wavelengths of visible light. The key to well-being is physical, emotional, mental balance and the impact of colours can have a beneficial effect in restoring and maintaining it.
Presentation
Colours are all around us. They enrich our world in all aspects of life. Colour is light and light is colour. The sun emits light at different frequenc