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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

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A three -way light bulb has 3 filaments?

A three-way light bulb actually has two brightness levels, not three filaments. It achieves this through a combination of filaments that can be turned on in different combinations to produce different levels of light.


What is the compound word for catapilar and a globe?

The compound word for "caterpillar" and "globe" would be "caterglobe."


What is a celestial globe?

Celestial globes were used to represent the stars and constellations of the night sky and record their positions with respect to each other and a co-ordinate system. They were also used as analogue computers to resolve problems involving the stars. In the most common form of celestial globe, a number of stars were marked on a sphere, and the constellation figures delineated. The sphere was mounted by its poles (corresponding to the celestial poles) on a metal circle, or meridian. The ecliptic and equator were marked and divided (into degrees) on the globe, to measure celestial longitude and right ascension. Declination was measured using divisions marked on the meridian. The globe was placed in a stand, which included a broad horizontal band, known as the horizon. The elevation of the pole of the globe above the horizon could be varied to adjust for the user's latitude. Once so adjusted, the rotation of the globe was analogous to the (apparent) diurnal rotation of the stars, for that latitude. Since the ecliptic and equator are marked, the globe could be used to work out the times of rising and setting of the stars, or the time of their culmination (the time when an object reaches its highest point in the sky). A celestial globe from the Whipple Museum.


A sentence with the word globe?

The frosted globe gave the light a soft glow.I showed the boy where he was on the globe of the world.


What is half of a globe call?

a hemisphere.

Related Questions

What main transition metal is used in drill bits and light globe filaments?

Tungsten is the main transition metal used in drill bits and light globe filaments due to its high melting point, hardness, and resistance to heat and wear.


Which elements are used to make a filament?

The most common element used in making filaments is Tungsten.


Which metal used in filaments?

Generally 'Tungstan'is use in bulb filaments.


What are the 3 filaments that make up the cytoskeleton?

Microfilaments, Microtubules, Intermediate filaments


What two materials did Edison use to make filaments?

Edison used carbonized bamboo and then switched to carbonized cotton threads as materials for his early filaments in his incandescent light bulbs.


What two materials did Edison experiment with in order to make filaments?

with what two materials did Edison experiment in order to make filaments


What metal use the filaments in light bulbs?

Tungsten is used in filaments of light bulbs.


What was used to make special effects in the globe theatre?

Trapdoors apex


How many different proteins filaments make up the cytoskeleton?

There are three main types of protein filaments that make up the cytoskeleton: actin filaments, microtubules, and intermediate filaments. Each of these filament types is composed of different proteins and plays distinct roles in maintaining cell structure, shape, and movement.


What mineral is used in tools and machinery?

The answer is iron. It is used to make steel for tools,machinery,and light-blub filsments. +++ Not the light-bulb filaments. They are made from tungsten.


Thin filaments at either end of the sarcomere are attached to interconnecting filaments that make up the what?

The thin filaments at either end of the sarcomere are attached to interconnecting filaments called Z-lines or Z-discs. These structures help anchor and align the thin filaments during muscle contraction.


Is a globe physical model?

yes a globe is a physical model because when you try to make it shows how you make the globe because it is hard to make the earth with out looking at a globe so it easier to make it or draw it will be hard to make it with out the globe that shows you the example you need that globe so that you know how to make the states countries cities and etc.