Question

define radius of curvature​

Answer 1

Answer:

the radius of curvature, R, is the reciprocal of the curvature. For a curve, it equals the radius of the circular arc which best approximates the curve at that point. For surfaces, the radius of curvature is the radius of a circle that best fits a normal section or combinations thereof.

Answer 2

Answer:

ᴛʜᴇ ᴅɪsᴛᴀɴᴄᴇ ғʀᴏᴍ ᴛʜᴇ ᴠᴇʀᴛᴇx ᴛᴏ ᴛʜᴇ ᴄᴇɴᴛᴇʀ ᴏғ ᴄᴜʀᴠᴀᴛᴜʀᴇ ɪs ᴋɴᴏᴡɴ ᴀs ᴛʜᴇ ʀᴀᴅɪᴜs ᴏғ ᴄᴜʀᴠᴀᴛᴜʀᴇ (ʀᴇᴘʀᴇsᴇɴᴛᴇᴅ ʙʏ ʀ). ᴛʜᴇ ʀᴀᴅɪᴜs ᴏғ ᴄᴜʀᴠᴀᴛᴜʀᴇ ɪs ᴛʜᴇ ʀᴀᴅɪᴜs ᴏғ ᴛʜᴇ sᴘʜᴇʀᴇ ғʀᴏᴍ ᴡʜɪᴄʜ ᴛʜᴇ ᴍɪʀʀᴏʀ ᴡᴀs ᴄᴜᴛ. ғɪɴᴀʟʟʏ, ᴛʜᴇ ᴅɪsᴛᴀɴᴄᴇ ғʀᴏᴍ ᴛʜᴇ ᴍɪʀʀᴏʀ ᴛᴏ ᴛʜᴇ ғᴏᴄᴀʟ ᴘᴏɪɴᴛ ɪs ᴋɴᴏᴡɴ ᴀs ᴛʜᴇ ғᴏᴄᴀʟ ʟᴇɴɢᴛʜ (ʀᴇᴘʀᴇsᴇɴᴛᴇᴅ ʙʏ ғ).