The coils of a magnet create a strong magnetic field when an electric current is passed through them. The current creates an electromagnetic field that amplifies the magnetic field created by the magnet. The stronger the electric current, the stronger the magnetic field. As the current passes through the coils, the magnetic fields created by …
Hans Christian Ørsted was a Danish physicist and chemist who discovered electromagnetism in 1820. He is considered a major figure in the study of electromagnetism and was one of the founders of modern physics. He also conducted important research in chemistry and was the first to isolate aluminum. Ørsted was born in Rudkøbing, Denmark, and …
Hans Christian Oersted – ഹാൻസ് ക്രിസ്ത്യൻ ഓർസ്റ്റഡ് Read More »
To find out the polarity of a magnet using a magnetic compass, hold the magnet near the compass and note which end of the compass needle is attracted to the magnet. The end of the needle that is attracted to the magnet is the north pole. The opposite end of the magnet is the south …
The periodic variation in the amount of sunshine over different places in both hemispheres of the Earth is caused by the tilt of the Earth’s axis. The Earth is tilted at an angle of 23.5 degrees, which causes the amount of sunlight to vary over the course of the year. During the summer months, the …
LED Chip: This is the heart of the LED bulb and is responsible for producing light. Heat Sink: Heat sinks are used to dissipate the heat generated by the LED chip. Driver: A driver is responsible for providing the power necessary to the LED chip. Lens or Reflector: A lens or reflector is used to …
The main components of a led bulb – ലെഡ് ബൾബിന്റെ പ്രധാന ഘടകങ്ങൾ Read More »
The best way to dispose of LED bulbs scientifically is to take them to a certified e-waste recycler. LED bulbs contain a variety of materials, including glass, plastics, aluminum, and mercury, which can be hazardous when not disposed of properly. A certified e-waste recycler will ensure that the materials are disposed of in an environmentally …
Scientifical disposal of LED bulbs – LED ബൾബുകൾ ശാസ്ത്രീയമായി നീക്കംചെയ്യാം Read More »
LED bulbs are a type of energy-efficient light bulb that uses light-emitting diodes (LEDs) as their source of light. LED bulbs are considered more efficient than traditional incandescent bulbs because they use less energy and last longer. LED bulbs are available in a variety of shapes, sizes, and colors.
Longer Life: Discharge lamps typically last much longer than incandescent lamps. Depending on the type and size of the lamp, discharge lamps can last up to 20,000 hours or more, compared to 1,500 hours for incandescent lamps. Lower Maintenance Costs: Due to their longer life, discharge lamps require less frequent replacement and therefore less maintenance …
Nichrome is an alloy of nickel and chromium, which has a very high melting point. This makes it unsuitable for use as a filament in an incandescent lamp since the temperature required to heat it to the point of incandescence would be too high to be practical.
The inert gas or nitrogen is used to prevent the filament from oxidizing when heated. Oxidation can cause the filament to break, shortening the life of the bulb. In addition, the inert gas or nitrogen helps to keep the temperature of the filament even, ensuring that the bulb produces a consistent light.