Friedrich Bezold was a German

Germany

Germany , officially the Federal Republic of Germany , is a federal parliamentary republic in Europe. The country consists of 16 states while the capital and largest city is Berlin. Germany covers an area of 357,021 km2 and has a largely temperate seasonal climate...

 otologist and professor at the University of Munich. He made several contributions to early audiology

Audiology

Audiology is the branch of science that studies hearing, balance, and related disorders. Its practitioners, who treat those with hearing loss and proactively prevent related damage are audiologists. Employing various testing strategies Audiology (from Latin , "to hear"; and from Greek , -logia) is...

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He is best known for developing hearing tests with tuning fork

Tuning fork

A tuning fork is an acoustic resonator in the form of a two-pronged fork with the prongs formed from a U-shaped bar of elastic metal . It resonates at a specific constant pitch when set vibrating by striking it against a surface or with an object, and emits a pure musical tone after waiting a...

s and his work to improve education for the hearing impaired. He was also the first physician to provide a clear understanding of mastoiditis

Mastoiditis

Mastoiditis is an infection of mastoid process, the portion of the temporal bone of the skull that is behind the ear which contains open, air-containing spaces. It is usually caused by untreated acute otitis media and used to be a leading cause of child mortality. With the development of...

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The following medical terms are named after him:

• Bezold's abscess
  Bezold's abscess
  Bezold's Abscess is an abscess in the sternocleidomastoid muscle where pus from a mastoiditis escapes into the sternocleidomastoid. It is a rare complication of acute otitis media.-Symptoms:...
  
  
• Bezold's mastoiditis: mastoiditis with perforation into the gigastric groove that creates a deep neck abscess.
• Bezold's sign: indication of descending mastoiditis
• Bezold's test: method of testing deafness by use of a tuning fork
• Bezold's triad: Three symptomatic indications of otosclerosis
  Otosclerosis
  Otosclerosis is an abnormal growth of bone near the middle ear. It can result in hearing loss.-Clinical description:Otosclerosis can result in conductive and/or sensorineural hearing loss...
  
  : 1. diminished aural perception of low frequency tones, 2. retarded bone conduction
  Bone conduction
  Bone conduction is the conduction of sound to the inner ear through the bones of the skull.Bone conduction is the reason why a person's voice sounds different to him/her when it is recorded and played back. Because the skull conducts lower frequencies better than air, people perceive their own...
  
  , 3. negative Rinne test
  Rinne test
  The Rinne test is a hearing test. It compares perception of sounds transmitted by air conduction to those transmitted by bone conduction through the mastoid...
  
  
• Bezold-Edelmann continuous scale: A series of tuning forks along with Galton's whistle or monochord
  Monochord
  A monochord is an ancient musical and scientific laboratory instrument. The word "monochord" comes from the Greek and means literally "one string." A misconception of the term lies within its name. Often a monochord has more than one string, most of the time two, one open string and a second string...
  
  , in which all perceptible notes can be heard in continuous sequence. Named along with physician Adolf Edelmann (1885-1939}.