Re: 27961 and 27965 Note that according to NIST 811 page 9, bel has the symbol B. bel is a logarithm of a ratio so, of itself, it has no dimension and is not subject to SI. (Do I say this right?) The use of bel itself is rare. We usually see dB, in acoustics and radio. It is not an SI unit but 811 says that "in the view of this Guide" it may be used with SI. Robert Bushnell
The BIPM bible, "The International System of Units", includes the "bel" in "Table 6. Non-SI units accepted for use with the International System", with the symbol "B".
Joseph B. Reid
17 Glebe Road West
Toronto M5P 1C8 Email: [EMAIL PROTECTED]
