What is the unit of sunshine recorders?
The Campbell-Stokes recorder (sometimes called a Stokes sphere) is a kind of sunshine recorder. It was invented by John Francis Campbell in 1853 and modified in 1879 by Sir George Gabriel Stokes. The original design by Campbell consisted of a glass sphere set into a wooden bowl with the sun burning a trace on the bowl. Stokes's refinement was to make the housing out of metal and to have a card holder set behind the sphere.
The unit is designed to record the hours of bright sunshine which will burn a hole through the card.
According to the State Climate Office of North Carolina webpage (http://www.nc-climate.ncsu.edu/climate/ncclimate.html): "Sunshine is relatively abundant, the average annual percent of possible sunshine ranges from 58 to 65 at the various stations having sunshine recorders. An average of 126 days per year are clear, 117 partly cloudy, and 122 cloudy, while measurable rain falls on 120 days."
Possible reasons that recorders are a popular musical instrument are: Recorders are cheap - at least the beginner types. Recorders are an easy first instrument - it is not hard to get a decent sound out of a recorder, and not hard technically to play a tune. Recorders are small and portable. Some countries have recorder lessons integrated into grammar school.
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Digital voice recorders can provider a higher quality of audio than a standard cassette recorder. You will be able to record an entire lecture or presentation to supplement the notes that you are taking while in the class. Digital recorders have less of a fail rate than cassette recorders and do not require the use of cassettes or micro cassettes or the need to erase them.
Digital Audio CD-Rs are made specifically for home audio cd recording systems. Most home audio systems have "standalone" CD recorders, not attached to a computer, and they require a CD-R that is made specifically for Digital Audio recorders. Some manufacturers also call them Music Only CD-R or Audio CD-R. These CD-Rs are Digital Audio recorders approved and will work in standalone CD recorders. A Digital Audio CD-R uses a SCMS copy-protection flag in the sub-code…
Andrew Charlton has written: 'Ayre conditioned' -- subject(s): Sextets (Recorders (4), tambourin, viola da gamba, Woodwind quartets (Recorders (4)) 'Cha-cha dolce [for] recorder quartet with optional gamba, maracas, and tambourine' -- subject(s): Cha-chas (Recorders (4)), Cha-chas (Recorders (4), percussion and viola da gamba) 'Idyllwild suite, for SATB recorder quartet' -- subject(s): Score and parts, Suites (Recorders (4))