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Fluorescence and confocal microscopes operating principle. Confocal microscopy, most frequently confocal laser scanning microscopy (CLSM) or laser scanning confocal microscopy (LSCM), is an optical imaging technique for increasing optical resolution and contrast of a micrograph by means of using a spatial pinhole to block out-of-focus light in image formation. [1]
LMD 100, dubbed as "Sri Lanka's Fortune 500", annually lists the leading 100 quoted companies in Sri Lanka. Only the top 10 companies are listed below. All revenue figures reported before the financial year ending 2024. [2] [3]
Here, λ 0 is the wavelength in vacuum; NA is the numerical aperture for the optical component (maximum 1.3–1.4 for modern objectives with a very high magnification factor). Thus, the resolution limit is usually around λ 0 /2 for conventional optical microscopy. [17]
The Lanka Hospitals Corporation: 22,351: 0.63 Health Care Equipment and Services: 1997 [39] Teejay Lanka: 22,147: 0.62 Consumer Durables and Apparel: 2000 [40] Brown and Company: 21,422: 0.60 Capital Goods: 1892 [41] Dilmah Ceylon Tea Company: 20,986: 0.59 Food, Beverage and Tobacco: 1981 [42] Sunshine Holdings: 20,909: 0.59 Food, Beverage and ...
One of these companies is TESCAN which was founded in 1991 by former Tesla development and service employees. The name TESCAN was derived from the words TESla and SCANning (scanning – screening). [3] TESCAN originally manufactured programmable controllers, digitizers for older analog scanning electron microscopes, and other small accessories.
One of the most important properties of microscope objectives is their magnification.The magnification typically ranges from 4× to 100×. It is combined with the magnification of the eyepiece to determine the overall magnification of the microscope; a 4× objective with a 10× eyepiece produces an image that is 40 times the size of the object.
The Academy of the Sri Lanka Institute of Nanotechnology (also known as SLINTEC Academy) is a private non-profit graduate school, founded as SLINTEC's knowledge dissemination arm. [37] The school offers MPhil and PhD degrees in Nano- and Advanced Sciences, and was formally inaugurated on 22 September 2017 at the Lakshman Kadirgamar Institute .
In 1892, the company was incorporated and in 1991 the company became a listed company on the Colombo Stock Exchange. The company was included in S&P Sri Lanka 20 Index in June 2021. [2] Brown and Company is one of the LMD 100 companies, an annual list of Sri Lankan listed companies by revenue, having ranked 42nd in the 2020/21 edition. [3]
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