What is the circle of illumination? Explain it with the help of a diagram and write the answer briefly (and also take my points! )
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The circle of illumination is the division between day and night over the earth. The circle of illumination bisects (cuts in half) all latitudes on the spring and autumnal equinoxes. At this time, all places have equal day length (12 hours). The circle of illumination always bisects the equator (0 degrees latitude).
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ᴛʜᴇ ᴄɪʀᴄʟᴇ ᴏꜰ ɪʟʟᴜᴍɪɴᴀᴛɪᴏɴ ɪꜱ ᴛʜᴇ ᴅɪᴠɪꜱɪᴏɴ ʙᴇᴛᴡᴇᴇɴ ᴅᴀʏ ᴀɴᴅ ɴɪɢʜᴛ ᴏᴠᴇʀ ᴛʜᴇ ᴇᴀʀᴛʜ. ᴛʜᴇ ᴄɪʀᴄʟᴇ ɪꜰ ɪʟʟᴜᴍɪɴᴀᴛɪᴏɴ ʙɪꜱᴇᴄᴛꜱ (ᴄᴜᴛ ɪɴ ʜᴀʟꜰ) ᴀʟʟ ʟᴀᴛɪᴛᴜᴅᴇꜱ ᴏɴ ᴛʜᴇ ꜱᴘʀɪɴɢ ᴀɴᴅ ᴀᴜᴛᴜᴍɴᴀʟ ᴇQᴜɪɴᴏx. ᴀᴛ ᴛʜᴇ ꜱᴀᴍᴇ ᴛɪᴍᴇ,ᴀʟʟ ᴘʟᴀᴄᴇꜱ ʜᴀᴠᴇ ᴇQᴜᴀʟ ᴅᴀʏ ʟᴇɴɢᴛʜ (12 ʜᴏᴜʀꜱ). ᴛʜᴇ ᴄɪʀᴄʟᴇ ɪꜰ ɪʟʟᴜᴍɪɴᴀᴛɪᴏɴ ᴀʟᴡᴀʏꜱ ʙɪꜱᴇᴄᴛꜱ ᴛʜᴇ ᴇQᴜᴀᴛᴏʀ (0 ᴅᴇɢʀᴇᴇꜱ ᴀʟᴛɪᴛᴜᴅᴇ).
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