1) what is infrared waves ? a) are elctromagntic waves b) are magntic waves c) all 2) who is the one that discoverd infrared waves a) Albert Einstein b) William Herschel c) Isaac Newton 3) what is our lesson today? a) x-rays b) microwaves c) infrared waves 4) in which year they discoverd infrared waves ? a) 1088 b) 1880 c) 1800

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