Question

why does heat radiate at the speed of light?

Answer 1

Answer:

Heat transfer through the movement of molecules within a system. ... The reason being the transfer of heat from a body in this case is aided by electromagnetic waves or photons. Any body above absolute zero temperature emit radiation at the speed of light that do not require any medium to propagate.

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Answer 2

ᴄᴏɴᴠᴇᴄᴛɪᴏɴ: ʜᴇᴀᴛ ᴛʀᴀɴsғᴇʀ ᴛʜʀᴏᴜɢʜ ᴛʜᴇ ᴍᴏᴠᴇᴍᴇɴᴛ ᴏғ ᴍᴏʟᴇᴄᴜʟᴇs ᴡɪᴛʜɪɴ ᴀ sʏsᴛᴇᴍ. ... ᴛʜᴇ ʀᴇᴀsᴏɴ ʙᴇɪɴɢ ᴛʜᴇ ᴛʀᴀɴsғᴇʀ ᴏғ ʜᴇᴀᴛ ғʀᴏᴍ ᴀ ʙᴏᴅʏ ɪɴ ᴛʜɪs ᴄᴀsᴇ ɪs ᴀɪᴅᴇᴅ ʙʏ ᴇʟᴇᴄᴛʀᴏᴍᴀɢɴᴇᴛɪᴄ ᴡᴀᴠᴇs ᴏʀ ᴘʜᴏᴛᴏɴs. ᴀɴʏ ʙᴏᴅʏ ᴀʙᴏᴠᴇ ᴀʙsᴏʟᴜᴛᴇ ᴢᴇʀᴏ ᴛᴇᴍᴘᴇʀᴀᴛᴜʀᴇ ᴇᴍɪᴛ ʀᴀᴅɪᴀᴛɪᴏɴ ᴀᴛ ᴛʜᴇ sᴘᴇᴇᴅ ᴏғ ʟɪɢʜᴛ ᴛʜᴀᴛ ᴅᴏ ɴᴏᴛ ʀᴇǫᴜɪʀᴇ ᴀɴʏ ᴍᴇᴅɪᴜᴍ ᴛᴏ ᴘʀᴏᴘᴀɢᴀᴛᴇ