Question

How does plasma make a campfire flame orange?​

Answer 1

Tʜᴇ ᴅᴇ-ᴇxᴄɪᴛᴀᴛɪᴏɴ ᴏғ ᴘʟᴀsᴍᴀ (ᴄʜᴀʀɢᴇᴅ ɢᴀs) ɪs ɴᴏᴛ ᴛʜᴇ sᴏᴜʀᴄᴇ ᴏғ ᴛʜᴇ ʟɪɢʜᴛ ɢɪᴠᴇɴ ᴏғғ ʙʏ ᴀ ᴄᴀᴍᴘғɪʀᴇ's ғʟᴀᴍᴇ. Tʜᴇ ɪɴᴄᴀɴᴅᴇsᴄᴇɴᴄᴇ ᴏғ sᴏʟɪᴅ sᴏᴏᴛ ᴘᴀʀᴛɪᴄʟᴇs ʙɪʟʟᴏᴡɪɴɢ ᴜᴘ ᴏɴ ᴀɴ ᴜᴘᴅʀᴀғᴛ ᴏғ ʜᴏᴛ ᴀɪʀ ɪs ᴡʜᴀᴛ ᴄʀᴇᴀᴛᴇs ᴛʜᴇ ʟɪɢʜᴛ sᴇᴇɴ ᴀs ᴀ ғʟᴀᴍᴇ.

Answer 2

The de-excitation of plasma (charged gas) is not the source of the light given off by a campfire's flame. The incandescence of solid soot particles billowing up on an updraft of hot air is what creates the light seen as a flame.

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