Question

what is light ????????????​

Answer 1

Answer:

Light or visible light is electromagnetic radiation within the portion of the electromagnetic spectrum that can be perceived by the human eye.

Answer 2

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WHAT IS LIGHT ?

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ʟɪɢʜᴛ ᴏʀ ᴠɪꜱɪʙʟᴇ ʟɪɢʜᴛ  ɪꜱ ᴇʟᴇᴄᴛʀᴏᴍᴀɢɴᴇᴛɪᴄ ʀᴀᴅɪᴀᴛɪᴏɴ ᴡɪᴛʜɪɴ ᴛʜᴇ ᴘᴏʀᴛɪᴏɴ ᴏꜰ ᴛʜᴇ ᴇʟᴇᴄᴛʀᴏᴍᴀɢɴᴇᴛɪᴄ ꜱᴘᴇᴄᴛʀᴜᴍ ᴛʜᴀᴛ ᴄᴀɴ ʙᴇ ᴘᴇʀᴄᴇɪᴠᴇᴅ ʙʏ ᴛʜᴇ ʜᴜᴍᴀɴ ᴇʏᴇ.ᴠɪꜱɪʙʟᴇ ʟɪɢʜᴛ ɪꜱ ᴜꜱᴜᴀʟʟʏ ᴅᴇꜰɪɴᴇᴅ ᴀꜱ ʜᴀᴠɪɴɢ ᴡᴀᴠᴇʟᴇɴɢᴛʜꜱ ɪɴ ᴛʜᴇ ʀᴀɴɢᴇ ᴏꜰ 400–700 ɴᴍ, ʙᴇᴛᴡᴇᴇɴ ᴛʜᴇ  ɪɴꜰʀᴀʀᴇᴅ (ᴡɪᴛʜ ʟᴏɴɢᴇʀ ᴡᴀᴠᴇʟᴇɴɢᴛʜꜱ) ᴀɴᴅ ᴛʜᴇ ᴜʟᴛʀᴀᴠɪᴏʟᴇᴛ (ᴡɪᴛʜ ꜱʜᴏʀᴛᴇʀ ᴡᴀᴠᴇʟᴇɴɢᴛʜꜱ).ᴛʜɪꜱ ᴡᴀᴠᴇʟᴇɴɢᴛʜ ᴍᴇᴀɴꜱ ᴀ ꜰʀᴇQᴜᴇɴᴄʏ ʀᴀɴɢᴇ ᴏꜰ ʀᴏᴜɢʜʟʏ 430–750 ᴛᴇʀᴀʜᴇʀᴛᴢ (ᴛʜᴢ).

ᴛʜᴇ ᴍᴀɪɴ ꜱᴏᴜʀᴄᴇ ᴏꜰ ʟɪɢʜᴛ ᴏɴ ᴇᴀʀᴛʜ ɪꜱ ᴛʜᴇ ꜱᴜɴ. ꜱᴜɴʟɪɢʜᴛ ᴘʀᴏᴠɪᴅᴇꜱ ᴛʜᴇ  ᴇɴᴇʀɢʏ ᴛʜᴀᴛ ɢʀᴇᴇɴ ᴘʟᴀɴᴛꜱ ᴜꜱᴇ ᴛᴏ ᴄʀᴇᴀᴛᴇ ꜱᴜɢᴀʀꜱ ᴍᴏꜱᴛʟʏ ɪɴ ᴛʜᴇ ꜰᴏʀᴍ ᴏꜰ ꜱᴛᴀʀᴄʜᴇꜱ, ᴡʜɪᴄʜ ʀᴇʟᴇᴀꜱᴇ ᴇɴᴇʀɢʏ ɪɴᴛᴏ ᴛʜᴇ ʟɪᴠɪɴɢ ᴛʜɪɴɢꜱ ᴛʜᴀᴛ ᴅɪɢᴇꜱᴛ ᴛʜᴇᴍ. ᴛʜɪꜱ ᴘʀᴏᴄᴇꜱꜱ ᴏꜰ  ᴘʜᴏᴛᴏꜱʏɴᴛʜᴇꜱɪꜱ  ᴘʀᴏᴠɪᴅᴇꜱ ᴠɪʀᴛᴜᴀʟʟʏ ᴀʟʟ ᴛʜᴇ ᴇɴᴇʀɢʏ ᴜꜱᴇᴅ ʙʏ ʟɪᴠɪɴɢ ᴛʜɪɴɢꜱ. ʜɪꜱᴛᴏʀɪᴄᴀʟʟʏ, ᴀɴᴏᴛʜᴇʀ ɪᴍᴘᴏʀᴛᴀɴᴛ ꜱᴏᴜʀᴄᴇ ᴏꜰ ʟɪɢʜᴛ ꜰᴏʀ ʜᴜᴍᴀɴꜱ ʜᴀꜱ ʙᴇᴇɴ ꜰɪʀᴇ, ꜰʀᴏᴍ ᴀɴᴄɪᴇɴᴛ ᴄᴀᴍᴘꜰɪʀᴇꜱ ᴛᴏ ᴍᴏᴅᴇʀɴ ᴋᴇʀᴏꜱᴇɴᴇ ʟᴀᴍᴘꜱ. ᴡɪᴛʜ ᴛʜᴇ ᴅᴇᴠᴇʟᴏᴘᴍᴇɴᴛ ᴏꜰ ᴇʟᴇᴄᴛʀɪᴄ ʟɪɢʜᴛꜱ  ᴀɴᴅ  ᴘᴏᴡᴇʀ ꜱʏꜱᴛᴇᴍꜱ, ᴇʟᴇᴄᴛʀɪᴄ ʟɪɢʜᴛɪɴɢ ʜᴀꜱ ᴇꜰꜰᴇᴄᴛɪᴠᴇʟʏ ʀᴇᴘʟᴀᴄᴇᴅ ꜰɪʀᴇʟɪɢʜᴛ. ꜱᴏᴍᴇ ꜱᴘᴇᴄɪᴇꜱ ᴏꜰ ᴀɴɪᴍᴀʟꜱ ɢᴇɴᴇʀᴀᴛᴇ ᴛʜᴇɪʀ ᴏᴡɴ ʟɪɢʜᴛ, ᴀ ᴘʀᴏᴄᴇꜱꜱ ᴄᴀʟʟᴇᴅ  ʙɪᴏʟᴜᴍɪɴᴇꜱᴄᴇɴᴄᴇ. ꜰᴏʀ ᴇxᴀᴍᴘʟᴇ,  ꜰɪʀᴇꜰʟɪᴇꜱ ᴜꜱᴇ ʟɪɢʜᴛ ᴛᴏ ʟᴏᴄᴀᴛᴇ ᴍᴀᴛᴇꜱ ᴀɴᴅ ᴠᴀᴍᴘɪʀᴇ ꜱQᴜɪᴅ ᴜꜱᴇ ɪᴛ ᴛᴏ ʜɪᴅᴇ ᴛʜᴇᴍꜱᴇʟᴠᴇꜱ ꜰʀᴏᴍ ᴘʀᴇʏ.

ᴛʜᴇ ᴘʀɪᴍᴀʀʏ ᴘʀᴏᴘᴇʀᴛɪᴇꜱ ᴏꜰ ᴠɪꜱɪʙʟᴇ ʟɪɢʜᴛ ᴀʀᴇ ɪɴᴛᴇɴꜱɪᴛʏ, ᴘʀᴏᴘᴀɢᴀᴛɪᴏɴ-ᴅɪʀᴇᴄᴛɪᴏɴ, ꜰʀᴇQᴜᴇɴᴄʏ ᴏʀ ᴡᴀᴠᴇʟᴇɴɢᴛʜ ꜱᴘᴇᴄᴛʀᴜᴍ ᴀɴᴅ ᴘᴏʟᴀʀɪᴢᴀᴛɪᴏɴ, ᴡʜɪʟᴇ ɪᴛꜱ ꜱᴘᴇᴇᴅ ɪɴ ᴀ ᴠᴀᴄᴜᴜᴍ, 299 792 458 ᴍ/ꜱ, ɪꜱ ᴏɴᴇ ᴏꜰ ᴛʜᴇ ꜰᴜɴᴅᴀᴍᴇɴᴛᴀʟ ᴄᴏɴꜱᴛᴀɴᴛꜱ ᴏꜰ ɴᴀᴛᴜʀᴇ. ᴠɪꜱɪʙʟᴇ ʟɪɢʜᴛ, ᴀꜱ ᴡɪᴛʜ ᴀʟʟ ᴛʏᴘᴇꜱ ᴏꜰ ᴇʟᴇᴄᴛʀᴏᴍᴀɢɴᴇᴛɪᴄ ʀᴀᴅɪᴀᴛɪᴏɴ (ᴇᴍʀ), ɪꜱ ᴇxᴘᴇʀɪᴍᴇɴᴛᴀʟʟʏ ꜰᴏᴜɴᴅ ᴀʟᴡᴀʏꜱ ᴛᴏ ᴍᴏᴠᴇ ᴀᴛ ᴛʜɪꜱ ꜱᴘᴇᴇᴅ ɪɴ ᴀ ᴠᴀᴄᴜᴜᴍ. ɪɴ ᴘʜʏꜱɪᴄꜱ, ᴛʜᴇ ᴛᴇʀᴍ 'ʟɪɢʜᴛ' ꜱᴏᴍᴇᴛɪᴍᴇꜱ ʀᴇꜰᴇʀꜱ ᴛᴏ ᴇʟᴇᴄᴛʀᴏᴍᴀɢɴᴇᴛɪᴄ ʀᴀᴅɪᴀᴛɪᴏɴ ᴏꜰ ᴀɴʏ ᴡᴀᴠᴇʟᴇɴɢᴛʜ, ᴡʜᴇᴛʜᴇʀ ᴠɪꜱɪʙʟᴇ ᴏʀ ɴᴏᴛ.ɪɴ ᴛʜɪꜱ ꜱᴇɴꜱᴇ, ɢᴀᴍᴍᴀ ʀᴀʏꜱ,  x-ʀᴀʏꜱ,  ᴍɪᴄʀᴏᴡᴀᴠᴇꜱ ᴀɴᴅ ʀᴀᴅɪᴏ ᴡᴀᴠᴇꜱ ᴀʀᴇ ᴀʟꜱᴏ ʟɪɢʜᴛ. ʟɪᴋᴇ ᴀʟʟ ᴛʏᴘᴇꜱ ᴏꜰ ᴇʟᴇᴄᴛʀᴏᴍᴀɢɴᴇᴛɪᴄ ʀᴀᴅɪᴀᴛɪᴏɴ, ᴠɪꜱɪʙʟᴇ ʟɪɢʜᴛ ᴘʀᴏᴘᴀɢᴀᴛᴇꜱ ᴀꜱ ᴡᴀᴠᴇꜱ.

ʜᴏᴡᴇᴠᴇʀ, ᴛʜᴇ ᴇɴᴇʀɢʏ ɪᴍᴘᴀʀᴛᴇᴅ ʙʏ ᴛʜᴇ ᴡᴀᴠᴇꜱ ɪꜱ ᴀʙꜱᴏʀʙᴇᴅ ᴀᴛ ꜱɪɴɢʟᴇ ʟᴏᴄᴀᴛɪᴏɴꜱ ᴛʜᴇ ᴡᴀʏ ᴘᴀʀᴛɪᴄʟᴇꜱ ᴀʀᴇ ᴀʙꜱᴏʀʙᴇᴅ. ᴛʜᴇ ᴀʙꜱᴏʀʙᴇᴅ ᴇɴᴇʀɢʏ ᴏꜰ ᴛʜᴇ ᴇʟᴇᴄᴛʀᴏᴍᴀɢɴᴇᴛɪᴄ ᴡᴀᴠᴇꜱ ɪꜱ ᴄᴀʟʟᴇᴅ ᴀ ᴘʜᴏᴛᴏɴ ᴀɴᴅ ʀᴇᴘʀᴇꜱᴇɴᴛꜱ ᴛʜᴇ Qᴜᴀɴᴛᴀ ᴏꜰ ʟɪɢʜᴛ. ᴡʜᴇɴ ᴀ ᴡᴀᴠᴇ ᴏꜰ ʟɪɢʜᴛ ɪꜱ ᴛʀᴀɴꜱꜰᴏʀᴍᴇᴅ ᴀɴᴅ ᴀʙꜱᴏʀʙᴇᴅ ᴀꜱ ᴀ ᴘʜᴏᴛᴏɴ, ᴛʜᴇ ᴇɴᴇʀɢʏ ᴏꜰ ᴛʜᴇ ᴡᴀᴠᴇ ɪɴꜱᴛᴀɴᴛʟʏ ᴄᴏʟʟᴀᴘꜱᴇꜱ ᴛᴏ ᴀ ꜱɪɴɢʟᴇ ʟᴏᴄᴀᴛɪᴏɴ ᴀɴᴅ ᴛʜɪꜱ ʟᴏᴄᴀᴛɪᴏɴ ɪꜱ ᴡʜᴇʀᴇ ᴛʜᴇ ᴘʜᴏᴛᴏɴ "ᴀʀʀɪᴠᴇꜱ". ᴛʜɪꜱ ɪꜱ ᴡʜᴀᴛ ɪꜱ ᴄᴀʟʟᴇᴅ ᴛʜᴇ ᴡᴀᴠᴇ ꜰᴜɴᴄᴛɪᴏɴ ᴄᴏʟʟᴀᴘꜱᴇ. ᴛʜɪꜱ ᴅᴜᴀʟ ᴡᴀᴠᴇ-ʟɪᴋᴇ ᴀɴᴅ ᴘᴀʀᴛɪᴄʟᴇ-ʟɪᴋᴇ ɴᴀᴛᴜʀᴇ ᴏꜰ ʟɪɢʜᴛ ɪꜱ ᴋɴᴏᴡɴ ᴀꜱ ᴛʜᴇ ᴡᴀᴠᴇ–ᴘᴀʀᴛɪᴄʟᴇ ᴅᴜᴀʟɪᴛʏ. ᴛʜᴇ ꜱᴛᴜᴅʏ ᴏꜰ ʟɪɢʜᴛ, ᴋɴᴏᴡɴ ᴀꜱ ᴏᴘᴛɪᴄꜱ, ɪꜱ ᴀɴ ɪᴍᴘᴏʀᴛᴀɴᴛ ʀᴇꜱᴇᴀʀᴄʜ ᴀʀᴇᴀ ɪɴ ᴍᴏᴅᴇʀɴ ᴘʜʏꜱɪᴄꜱ.

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$\small\frak\blue{ᚅᚅᚅᚅᚅᚅᚅᚅᚅᚅᚅᚅᚅᚅᚅᚅᚅᚅᚅᚅᚅᚅᚅ}$

$\huge\frak\red{In \: simple \: words}$

Light is a form of energy that enables us to see all the things around us. The main source of light on the earth is the sun. Plants are able to prepare their own food using sunlight. Some other objects also give out light. They are known as luminous objects.

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