منابع مشابه
A sensitive and high dynamic range cw laser power meter.
We report the design of a cost effective, highly sensitive cw laser power meter with a large dynamic range based on a photodiode. The power meter consists of a photodiode, a current to voltage converter circuit, an offset balancing circuit, a microcontroller, an analog to digital converter, reed relays, and an alphanumeric liquid crystal display. The power meter can record absolute laser power ...
متن کاملA simple and inexpensive pinch meter to detect subclinical weakness among leprosy patients.
This paper describes the use of a neonatal sphygmomanometer cuff as a simple, inexpensive pinch meter. Normal values for key pinch, pulp pinch and side pinch in the dominant hand of healthy Nepali people are provided. The pinch meter was also used to test pinch strength in hands affected by leprosy and normal hands. Some patients with leprosy who have no objective weakness on voluntary muscle t...
متن کاملA simple posture meter.
In ankylosing spondylitis a simple method of measuring and recording spinal deformity is of value in assessing progress. Methods in use include serial photography, serial strip plaster-of-paris casts, and lead-moulding tracing the outline on to paper. The apparatus described below is cheaper, less cumbersome, and more simple and convenient to use. Construction It consists of an upright, 6 ft. 3...
متن کاملA Simple and Inexpensive Flea-Proof Cage
a platform of wire mesh (4 to the inch) is arranged inside the cage. A removable lid about 1^ inches deep is prepared. A third of this lid is cut away and fine-meshed (40 to the inch) good quality copper or brass gauze is fixed by soldering, or better still by soldering a strip of tin over the free edges. A shallow (about \ inch deep) removable tray is fitted near the bottom of the tin and the ...
متن کاملA Simple and Inexpensive Evaporator Entrainment Separator
Use of angle iron separators in two evaporator vessels at Darnall resulted in a marked reduction in entrainment rates. Efficiencies in excess of 90% were observed with negligible pressure differential across the separator. Separator efficiency can be evaluated rapidly by using a centrally based Auto-Analyser. Introduction To avoid sugar losses by entrainment, all evaporator vessels are fitted w...
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ژورنال
عنوان ژورنال: Journal of Physics E: Scientific Instruments
سال: 1984
ISSN: 0022-3735
DOI: 10.1088/0022-3735/17/3/004