Chandrayaan Vipnet club of Physics department of
Hans Raj Mahila Maha Vidyalaya, Jalandhar organized two days National Seminar
cum e-Workshop on Experimental Electronics under the guidance of Principal Prof.
Dr. (Mrs.) Ajay Sareen. The resource person of the event was Dr. Manish Dev
Sharma, Assistant Professor, Panjab University, Chandigarh. Mrs. Saloni Sharma,
HOD Physics department welcomed the guest. The event commenced with Gaytri
Mantra. In the present scenario COVID 19, whole society is looking forward to
the scientists to find works the cure and various preventive techniques for the
disease. This signifies the role of experimental research for the betterment of
the society. To promote experimental research, this seminar cum e-Workshop was
organized on different electronic devices used for the measurement of
temperature. On the first day of the event, Dr. Sharma explained the different methods
of measurement of temperature like mercury thermometer, IR Sensor thermometer,
Pt100 Thermometer and Thermocouple. He elaborated the basic principles of
physics working behind these devices and also explained their internal electronic
components. He explained that working of mercury thermometer is based on
expansion property of metals and capillary action. He demonstrated how IR
Sensors thermometer which is commonly used these days to measure the
temperature of people at every entry of malls, institutes, hospitals etc.
measures temperature even from some
distance and displays the reading at small display unit at the other end.
Second method was using platinum 100 resistors. Dr. Sharma informed that
sensitive devices like Platinum 100 thermometer are used in appliances like A.C
to measure the temperature of rooms. He told that Platinum100 thermometer makes
use of the variation of electrical resistance of high purity Platinum wire with
temperature. He told that the resistance of Pt100 thermometer changes by 0.4
ohm per degree change in temperature and is calibrated to read the temperature.
Moreover, he explained the thermocouples
are also very convenient thermometer operating under the principle that a
circuit made by connecting two dissimilar metals produces a measurable voltage
when a temperature gradient is imposed between two ends of the thermocouple.
Such thermometers are used in thermostats. Mrs. Simmi Garg, Assistant Professor
in Physics concluded the day.
On the second day of the event, Dr. Sharma
practically demonstrated these methods of temperature measurement in his lab at
Panjab University Chandigarh. There was active participation of the students by
asking questions.1232 students from all over the country registered for the event.
Mr. Sushil Kumar, Assistant professor in
Physics presented vote of thanks. Madam Principal congratulated the physics
department for the successful organization of the event.
