It has a outer cylinder which is 20 cm in diameter and 50 cm tall. Some new light on the Campbell±Stokes sunshine recorder G. Stanhill Institute of Soil, Water and Environmental Sciences, Bet Dagan, Israel Although it is now 150 years since the first measurements of sunshine were made using the burning glass method, a number of questions concerning these observations remain open and are considered in this article. Blake Larsen Recorder Designed a few years ago , the Blake Larsen Sunshine Recorder is a more sophisticated sunshine recorder that uses sensors to detect solar radiation and record them. The first is historical … Sunlight shines into one side of a glass ball and leaves through the opposite side in a concentrated ray. 2. The Campbell Stokes Recorder measures sunshine. It is an instrument that measures the sunshine hours in a day at a given location. A solar radiometer measures how the intensity of sunlight changes during a cloudy day or throughout the year. Sunshine hours (or, more correctly, hours of bright sunshine) is the traditional measure of the amount of sunshine that a location has received. The [Campbell-Stokes Pattern] Sunshine Recorder is used to measure the duration of sunshine, that is, the number of hours of sunshine per day. This ray of light burns a mark onto a thick piece of card. The sun’s rays are focused by a glass sphere to an intense spot which will char a mark on a curved, … They are also important to the work of physicists, who study the way air moves. Record sunshine. Sunshine is measured using either Campbell-Stokes sunshine recorders or modern sunshine sensors. Fig. The Campbell-Stokes recorder (sometimes called a Stokes sphere) is a kind of sunshine recorder. Get latest & updated sunshine recorder prices in Tiruvannamalai for your buying requirement. Image Credit Flickr User LaurentKB The Campbell–Stokes Recorder comes in a variety of sizes, some quite large, but is typically around 4 inches in diameter. Campbell-Stokes sunshine recorder with the actual direct solar irradiance. The total amount of sunshine in a day is measured and the suns rays travel through a glass ball and burn marks onto a card behind it. 7.1.2 Sunshine Duration Measuring Instruments Campbell-Stokes sunshine recorders and Jordan sunshine recorders have long been used as instruments to measure sunshine duration, and are advantageous in that they have no moving parts and require no electric power. Nowadays meteorological stations measure the amount of time that the Sun shines with an electronic sensor, but until very recently a Campbell-Stokes sunshine recorder did the job. Instrument Campbell-Stokes sunshine recorder (Figure 1) How it works A spherical glass lens burns a trace in a specially-shaped card in sunshine Pros Long-established (developed in 1870s) Standard method for many years, now being superseded by electronic sensors Cons Burn threshold very variable Measurement of burn length very subjective (± 15%) The improvement of Stoke on the instrument designed by Campbell resulted in the name “Campbell-Stokes sunshine recorder” (Stanhill, 2003). The snow gauge is a derivative of the rain gauge which was invented in 1441 during the Joseon Dynasty and called the Cheugugi. The Campbell–Stokes recorder (sometimes called a Stokes sphere) is a type 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. Thanks, Gayle M. 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