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The high temperature causes a small amount of the metal in the filament to evaporate away. Over some time, the filament will develop a "hot spot" where it is thinner than the rest of the filament, which causes more rapid degradation and the filement will "blow".

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What metal is used in lamp filaments?

TungstenphosphorusTungstenTungsten/Wolfram


Greyish white element used in lamp filaments?

Tungsten is a greyish white element commonly used in lamp filaments. It has a high melting point and can withstand the high temperatures generated when electricity passes through it, making it ideal for use in light bulbs.


What type of light build glows when a filament inside it gets hot?

Electric lamps having incandescent filaments.


How does a 3 way lamp work to provide different levels of brightness?

A 3-way lamp works by having a special socket that can accommodate a 3-way bulb with two filaments of different wattages. The lamp has a 3-way switch that allows you to turn on one filament for low brightness, the other filament for medium brightness, and both filaments for high brightness. This way, you can adjust the light output to three different levels by toggling the switch.


What is used to make globe filaments?

The first successful light bulb filaments were made of carbon (from carbonized paper or bamboo). In 1902 the Siemens company developed a tantalum lamp filament. From 1898 to around 1905 osmium was also used as a lamp filament. In 1906 the tungsten filament was introduced


Do myosin filaments outnumber actin filaments in skeletal muscles?

No, actin filaments outnumber myosin filaments in skeletal muscles. Actin filaments are thin filaments, while myosin filaments are thick filaments. The arrangement and interplay of these filaments during muscle contractions are essential for movement.


Why starter used in tube light fitting?

The starter is used to help the lamp light and acts like a closed switch. It allows electric current to flow through the filaments.


Why would a light bulb contain more than one filament?

In a lamp you can have three settings with two filaments. One filament is for dim. When it is on, the bulb is dim. One filament is medium. When only it is on, the light is medium. When both filaments are on, the bulb is bright. In auto and motorcycle applications headlamps can have 2 filaments. A 'dip' beam and a 'High' or 'Main' beam. When the High Beam is on the Dip is off and vice versa.


Who invented the filaments that lasted longer?

If you you mean Incandescent lamp filaments then Joseph Swan and Thomas Edison created the first lamps with carbon filaments.Edison's workers tried hundreds of fibres before carbonising a sliver of bamboo bark. These were later replaced with a coiled coil of Tungsten in the early 20th century. It was the invention of a process by William Coolidge that could coax this extremely hard and non ductile metal into a fine filament that revolutionised the durability of ordinary lamp bulb


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thick filaments and thin filaments


I need to draw a circuit diagram to show this but I have no idea how do you find the resistance of a lamp in a circuit?

If you have a lamp, you can assume that the resistance of the lamp when it is under power will follow the ohms law. BUT, one thing you must remember is, when a lamp is under load, it is glowing HOT. When metal is HOT, the molculoes of the meals are in much more active state. When this happens, the resistance will increase. Conversely, when the lamp is NOT on ON state, the filaments are cold. Moleculoes in the filaments are not as active. Thus, the resistance is lower. There is almost 10 to 1 difference in resistance from hot to cold. Taking out a multimeter and measuring the resistance of the lamp will not help you determine the resistance of the lamp when it is actually under load (with voltage applied) Really, the only thing you can do is to measure the voltage, measure the current, then arrive at the resistance mathmatically.


What are cytoskeleton filaments?

Cytoskeleton filaments are protein fibers within cells that provide structure, support, and facilitate cell movement. They include microfilaments (actin filaments), microtubules, and intermediate filaments. These filaments help with cell division, cell shape maintenance, and cell signaling.