Physics, asked by jkhandelwal, 4 months ago

Why are two fixed point needed for a temperature scale and not just one?

Answers

Answered by bhoomikasanjeev2009
1

Answer:

ғᴏʀ ᴀɴʏ ᴛᴇᴍᴘᴇʀᴀᴛᴜʀᴇ sᴄᴀʟᴇ, ɪᴛ ɪs ɴᴇᴄᴇssᴀʀʏ ᴛᴏ ʜᴀᴠᴇ ᴛᴡᴏ ғɪxᴇᴅ ᴘᴏɪɴᴛs. ᴛʜᴇsᴇ ᴀʀᴇ ᴛᴇᴍᴘᴇʀᴀᴛᴜʀᴇs ᴀᴛ ᴡʜɪᴄʜ ᴘᴀʀᴛɪᴄᴜʟᴀʀ ᴘʜʏsɪᴄᴀʟ ᴘʀᴏᴘᴇʀᴛɪᴇs ᴍᴀɴɪғᴇsᴛ ᴛʜᴇᴍsᴇʟᴠᴇs ᴇɢ ᴍᴇʟᴛɪɴɢ, ʙᴏɪʟɪɴɢ. ᴄᴏᴍᴍᴏɴ ғɪxᴇᴅ ᴘᴏɪɴᴛs: ɪᴄᴇ ᴘᴏɪɴᴛ - ᴛᴇᴍᴘᴇʀᴀᴛᴜʀᴇ ᴡʜᴇɴ ᴘᴜʀᴇ ᴡᴀᴛᴇʀ ɪᴄᴇ ɪs ɪɴ ᴇǫᴜɪʟɪʙʀɪᴜᴍ ᴡɪᴛʜ ʟɪǫᴜɪᴅ ᴡᴀᴛᴇʀ ᴀᴛ sᴛᴀɴᴅᴀʀᴅ ᴀᴛᴍᴏsᴘʜᴇʀɪᴄ ᴘʀᴇssᴜʀᴇ (76ᴍᴍ ʜɢ).

Answered by QTPIEE
1

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A fixed point is a standard degree of hotness or coldness such as the melting point of ice or boiling point of water. This method of using two fixed points to calibrate a thermometer assumes that temperature changes linearly with the thermometric property.

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