To Truly Understand a Rainbow
ICSE · Class 7 · English Literature : Book 'Gulmohar'
Summary of To Truly Understand a Rainbow for ICSE Class 7 English Literature : Book 'Gulmohar'. Key concepts, important points, and chapter overview.
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Overview
Kathleen Krull’s text presents the story of Isaac Newton’s discovery that white light is made of all colours. It explains how Newton used prisms to test old beliefs about light and colour, and how careful observation helped him reach a correct scientific conclusion. The chapter also connects this di
Key Concepts
Newton used a prism to split
Newton used a prism to split sunlight into coloured bands and found that white light is made up of all colours.
The coloured bands formed when white
The coloured bands formed when white light passes through a prism are called a spectrum.
Refraction means bending of light
Refraction means bending of light. Different colours bend by different amounts when they pass through a prism.
Newton concluded that the spectrum has
Newton concluded that the spectrum has seven colours: red, orange, yellow, green, blue, indigo, and violet.
Newton used a second prism on
Newton used a second prism on only green light to prove that the prism itself was not colouring the light.
Learning Objectives
- Understand how Newton discovered that white light contains all colours
- Compare Newton’s idea with the older ideas of Aristotle and Robert Hooke
- Learn the meaning of spectrum, refraction, and the seven colours of the spectrum
- See how a crucial experiment can prove a scientific idea
- Understand how the poem 'Coromandel Fishers' shows the fishermen’s love for the sea
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Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
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