B_(disambiguation)

Look up B in Wiktionary, the free dictionary.

B is the second letter of the alphabet.

B may also refer to:

In science and technology

• B battery (vacuum tubes)
• Haplogroup B (mtDNA), a human mitochondrial DNA (mtDNA) haplogroup
• Haplogroup B (Y-DNA), a Y-chromosomal DNA (Y-DNA) haplogroup
• B, Blood type
• Boron, a chemical element
• B, B+ and B-, expressions of bouyancy in Convective available potential energy
• B, Magnetic Field, in Physics
• B, Brassavola, a genus of 20 orchids

In music and education

• B (musical note)
• ♭ Flat (music), a note lower in pitch by a semitone
• B, grade (education) for evaluation of students\' work

In computing

• b, bit
• B, byte
• B (programming language)
• B-Method, for computer software development

In photography

• Bulb, a shutter-speed setting

See also

• Decibel, one tenth of a bel (B)

This disambiguation page lists articles associated with the same Latin letter. If an internal link led you here, you may wish to change the link to point directly to the intended article.

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