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The famous atomic emission spectrometry company in history (1)
The analytical circle has been serializing the famous atomic emission spectroscopic company in history from today. As with football, Brazil is a team that can't be around, so when it comes to atomic emission spectrum, ARL is a company that can never be around.
In the 1930s, physics attracted people's attention just like the Internet today. Shortly after Einstein had just visited Caltech, a student named Maurice Hasler entered the school. He was attracted by Professor Millikan, a legendary scientist who was the first in spark spectroscopy, to discover more than 1000 lines in the ultraviolet region, and was awarded the Nobel Prize for measuring the Planck constant H.
Hasler completed his Ph.D. in California technology. In addition to a diploma from mixed meals, he found a magic thing called spectrometer, which can be used for a few minutes, and it takes hours for his wet chemistry students to do the same. Actually, there is also a magical person, although Hasler knows but does not find out - his instructor Arnold Beckman, later founded Beckman instruments company.
After graduation, Hasler felt that it was very likely that he couldn't afford to pay for a job, so he and his friend Ronald lindhurst wanted to create a consulting company in partnership. To make people feel like this is a professional, very good X company, he came up with a very good name: applied research laboratories, which, if abbreviated with the acronym, is ARL
In February 1934, ARL was officially opened in Los Angeles. Hasler, with a very fine head, has found the prospect of making money from the spectrometer through his work. Although no one knows about this instrument, it will definitely be used in the laboratory in the future. So now what he has to do is to make a spectrum and start with a few live tests to earn the first barrel of gold. But even if a Ph.D. graduate in 100 years' time would have to make a spectrometer, it was very difficult, let alone in the 1930s. Of course Hasler is not a simple silly doctor. He is quite communicative. Through the University relationship, he borrowed a grating from the University of California Technology Well, that's the ability. He and lindhurst made the first spectrometer with this grating, and then made the first barrel of gold in two years.
In 1935, several university of California teachers wanted to find a quick way to detect zinc in lemon peel (we were on the march in 1935, NIMA Americans were testing lemon peel), but no company on the market could test lemon peel (it seems that no one will test lemon peel now!) So these boring teachers gave ARL an order, hoping to design a new spectrometer.
ARL first demonstrated his unique creativity, when all spectrometers recorded the spectrum with glass, but ARL first used film as a new device to record the spectrum, which was the first time in the instrument industry. Because of this creative design, ARL received another order in a year, and he was richer.
In 1938, ARL again erupted in creativity. He integrated the comparator and the hydrometer (analysis circle note: two ancient components) into a spectrometer, so that for the first time a characteristic spectrum line was displayed on the screen. It was a landmark innovation at that time. We must think of the day when a company launched a stereoscopic projection spectrum, we must think it was alien technology.
In 1938, ARL continued to create amazing things, adding an exit slit to the front of the film for the first time. Now, many of the exit slots we use for spectrometers were the first time ARL used it.
By 1940, ARL had already had many patents, one of which was called glow discharge tube, which helped ARL launch its first spark spectrometer. When all spark discharge spectrometers were still using a spark source which could not control discharge, ARL used synchronous interrupter to control spark discharge creatively, and combined with DC arc rectifier, it made ARL spark spectrum technology far beyond his era and greatly improved the accuracy of quantitative analysis of spark spectrum.
With the increasing intensity of World War II, military manufacturers are increasingly demanding rapid detection. Even spark spectrum, such rapid detection technology, can not satisfy ARL customers. So since 1942, ARL has been working with his important customer, Alcoa, to develop new spark spectra. They used the most advanced photoelectric technology to replace the camera method and read multiple element spectrum lines directly, which has been done for four years.
In 1946, the first spark direct reading spectrometer was born in the world. The word "direct reading" widely used today is invented by ARL, and the "direct reading spectrometer" has become a standard of instrument. In memory of this great invention, ARL's first direct reading spectrometer was named quantomer. Today, the 3460 direct reading spectrometer with the largest number of ARL users is derived from this quantomer. In fact, we still need the same demand for direct reading spectrometer today, but the speed and accuracy of today's instruments have greatly exceeded 1946.