Question

why international system of units are called base units​

Answer 1

Tʜᴇ Iɴᴛᴇʀɴᴀᴛɪᴏɴᴀʟ Sʏsᴛᴇᴍ ᴏғ Uɴɪᴛs ɪs ᴀ sʏsᴛᴇᴍ ᴏғ ᴍᴇᴀsᴜʀᴇᴍᴇɴᴛ ʙᴀsᴇᴅ ᴏɴ 7 ʙᴀsᴇ ᴜɴɪᴛs: ᴛʜᴇ ᴍᴇᴛʀᴇ (ʟᴇɴɢᴛʜ), ᴋɪʟᴏɢʀᴀᴍ (ᴍᴀss), sᴇᴄᴏɴᴅ (ᴛɪᴍᴇ), ᴀᴍᴘᴇʀᴇ (ᴇʟᴇᴄᴛʀɪᴄ ᴄᴜʀʀᴇɴᴛ), Kᴇʟᴠɪɴ (ᴛᴇᴍᴘᴇʀᴀᴛᴜʀᴇ), ᴍᴏʟᴇ (ϙᴜᴀɴᴛɪᴛʏ), ᴀɴᴅ ᴄᴀɴᴅᴇʟᴀ (ʙʀɪɢʜᴛɴᴇss). Tʜᴇsᴇ ʙᴀsᴇ ᴜɴɪᴛs ᴄᴀɴ ʙᴇ ᴜsᴇᴅ ɪɴ ᴄᴏᴍʙɪɴᴀᴛɪᴏɴ ᴡɪᴛʜ ᴇᴀᴄʜ ᴏᴛʜᴇʀ.

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Answer 2

The International System of Units is a system of measurement based on 7 base units: the metre (length), kilogram (mass), second (time), ampere (electric current), Kelvin (temperature), mole (quantity), and candela (brightness). These base units can be used in combination with each other.