Question

What is thermal equilibrium ? How can it be achieved

Answer 1

Answer:

It is observed that a higher temperature object which is in contact with a lower temperature object will transfer heat to the lower temperature object. The objects will approach the same temperature, and in the absence of loss to other objects, they will then maintain a constant temperature.

Answer 2

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ɪᴛ ɪs ᴏʙsᴇʀᴠᴇᴅ ᴛʜᴀᴛ ᴀ ʜɪɢʜᴇʀ ᴛᴇᴍᴘᴇʀᴀᴛᴜʀᴇ ᴏʙᴊᴇᴄᴛ ᴡʜɪᴄʜ ɪs ɪɴ ᴄᴏɴᴛᴀᴄᴛ ᴡɪᴛʜ ᴀ ʟᴏᴡᴇʀ ᴛᴇᴍᴘᴇʀᴀᴛᴜʀᴇ ᴏʙᴊᴇᴄᴛ ᴡɪʟʟ ᴛʀᴀɴsғᴇʀ ʜᴇᴀᴛ ᴛᴏ ᴛʜᴇ ʟᴏᴡᴇʀ ᴛᴇᴍᴘᴇʀᴀᴛᴜʀᴇ ᴏʙᴊᴇᴄᴛ. ᴛʜᴇ ᴏʙᴊᴇᴄᴛs ᴡɪʟʟ ᴀᴘᴘʀᴏᴀᴄʜ ᴛʜᴇ sᴀᴍᴇ ᴛᴇᴍᴘᴇʀᴀᴛᴜʀᴇ, ᴀɴᴅ ɪɴ ᴛʜᴇ ᴀʙsᴇɴᴄᴇ ᴏғ ʟᴏss ᴛᴏ ᴏᴛʜᴇʀ ᴏʙᴊᴇᴄᴛs, ᴛʜᴇʏ ᴡɪʟʟ ᴛʜᴇɴ ᴍᴀɪɴᴛᴀɪɴ ᴀ ᴄᴏɴsᴛᴀɴᴛ ᴛᴇᴍᴘᴇʀᴀᴛᴜʀᴇ.