
Physics Instruments Co.
Physics Instruments Co. was established as a partnership firm, incorporated in the year 1959. The company is involved in manufacturing, exporting, supplying and trading a vast range of Deflection Magnetometer, Ultrasonic Interferometer, Industrial Potentiometer, Physic Instrument and many others. All products are manufactured using latest production technology, which make our range highly preferable among the huge clientele. Moreover, best quality raw material is also used to develop these products, which improve the excellence of products and make them highly preferable into the market. We source raw material from the vendors, whom we have selected after rigorous market research, in which their timely delivery schedules, quality and financial stability are examined stringently. With our best quality range of products customization solutions, ethical business practices, fair dealings and timely delivery schedules; our company has been able to mark its name as a well-known manufacturer, supplier, exporter and trader in industry. We are well supported by trained and experienced professionals, who manage ably the whole business operations. Almost three hundred dealers are working with us, who remain constantly in touch with the clients to understand their requirements and assuring timely supplies of the desirable product range along with best after sales support. Team of senior people in the domain of R & D is also possessed by our company, which work as our consultants for the development works.
Under the prudent guiding principles of our honorable business managing partner Mr. Dhandapani Chandrasekaran we have successfully placed a desirable status for ourselves in the industry.
Our company feels proud to announce that we are the one and only India’s manufacturer, which is engaged in designing, developing and producing the wide assort of products, which we have mentioned I the above paragraph. The instrument is developed by Mr. T. S. Natarajan, who is the professor of IIT Madras.
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Module 36, III Floor, Block II, Sidco Electronic Complex,,Industrial Estate, Guindy,,
Chennai - 600032
Chennai - 600032
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Plancks Constant Using LED
Gradually increase the current through the LED by increasing the supply DC voltage until light emission barely becomes visible. The voltage measure with the multimeter at this point is V0. If the LED does not light up, then reverse the cable connections at the power supply.The energy E of a photon of frequency f is E = hf , where h is Planck's constant (h = 6.63 x 10-34 Js). Plotting ∆V against f for LEDs of several different colours produces a straight line of slope h/e. Measuring the graph's slope and multiplying it by e yields Planck's constant.We use LEDs in this experiment because each colour of LED has a different threshold voltage at which electrons start being produced. Measuring this voltage, together with known values for the emission wavelengths, provides a path to finding a value for the Planck constant.
Chennai - Tamil Nadu

