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โˆ™ 2011-11-04 11:01:26
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Q: Element used in photoelectric cells and in atomic clocks?
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Related Questions

What element is used in photoelectric cells and atomic clocks?


Where is caesium found?

The richest source of caesium in nature, at least in 1985, was a deposit of pollucite, a mineral that is hydrated mixed silica of aluminum and caesium, near Bernic Lake, Manitoba, Canada. The primary uses of the element are in photoelectric cells, as a hydrogenation catalyst, in atomic clocks, and in ionic propulsion systems for space vehicles.

What uses does caesium have?

Caesium (also called cesium) is used in photoelectric cells, as a catalyst for hydrogenation of some organic compounds, in medical applications, and in industrial research. Other uses of caesium include atomic clocks, removing air traces from vacuum tubes, and in ion propulsion systems.

What element is found in photoelectric cells?

caesium and sometimes potassium because of when these elements are irradiated with light,the light energy is sufficient for atom to lose electron...

What is the most common use for caesium?

Caesium (Cesium in American English), one of three metals that is in the liquid form at room temperature is most commonly used in atomic clocks. Historically, the most important use for cesium has been in research and development, primarily in chemical and electrical applications. It is also used in photoelectric cells.

What element has 34 protons?

Selenium is an element which contains 34 protons. With these 34 protons, it also contains 45 electrons. SE (selenium's symbol) is mainly used TV cameras and photoelectric cells. The element was discovered in 1817 by Jons Berzelius.

What are photoelectric cells?

Photoelectric cells are devices that generate electrical output that is dependent on the amount of illumination. They are used in various mechanical devices to set off alarms or open doors.

Is rubidium used in photoelectric cells?

This application is probably possible.

Who invented photoelectric cells and in which year?

Photoelctric cells was first discovered by Johann Elster and Hans Geitel.

What has the author Richard S Hunter written?

Richard S. Hunter has written: 'Photoelectric tristimulus colorimetry with three filters' -- subject(s): Colorimetry, Photoelectric cells

What has the author Albert Ray Olpin written?

Albert Ray Olpin has written: 'Cosmopolitan provincialism: Utah!' -- subject(s): History, University of Utah 'Method of enhancing the sensitiveness of alkali metal photoelectric cells' -- subject(s): Photoelectric cells

What has the author Bruno Lange written?

Bruno Lange has written: 'Photometrische Analyse' -- subject(s): Colorimetric analysis 'Die Photoelemente und ihre Anwendung' -- subject(s): Photoelectric cells 'Photoelements and their application' -- subject(s): Photoelectric cells

Why cesium and potassium used in photoelectric effect?

Caesium and potassium have low work functions. As a result, when these metals are irradiated with light, the light energy absorbed may be sufficient to make these metals emit electrons (photoelectric effect). This property makes caesium and potassium useful as electrodes in photoelectric cells.

Give two examples of photoelectric cells and explain how they work?

The most common photoelectric cells consist of two electrodes separated by light sensitive semiconductor material. A high voltage source, such as a battery, is connected to the electrodes set up a current even in the absence of light. When light strikes the semiconductor material in the photocell, current in the circuit increases in proportion to the intensity of the light. The current from a photoelectric cell is often used to operate switches or relays, so are often used in automatic door openers and intrusion alarms. This type of photoelectric cells are called electric eyes.

How do photocells generate electricity?

the photoelectrons released during photoelectric effect are used to generate electricity in photo cells

Mention the different types of photoelectric cells?

there are three types ,they are photoconductive cell ,photoemissive cell and photovoltiac cell

What element is used for photoelectric and solar cells?

most are silicon. some high efficiency ones for special applications have been made using gallium arsenide, but these are too expensive for commercial or home use, also there is a potential problem of arsenic leaching.

Is cells an element?


Does calcium have cells?

no... it is made up of elements. It does not have cells because it is an element. Think of hydrogen. Its an element.

How is light absorbed and made into electricity?

light is absorbed by special cells known as photoelectric cells...... these cells are made uf certain materials that release electrons upon absorbing energy in the form of light...

What are the characteristics of calcuim?

Calcium is element 20 on the periodic table with an atomic mass of 40.078 amu. It is an alkaline earth metal and is found in the human body (bones, cells, etc).

Instrument used for changing light to energy?

photo voltaic cells convert light energy to electricalenergy The conversion of sunlight to electricity using photovoltaic (PV) cells, also known as solar cells, is based on the photoelectric effect discovered by Alexander Bequerel in 1839. The photoelectric effect describes the release of positive and negative charge carriers in a solid state when light strikes its surface.

Which element on the periodic table is used to kill cancer cells?

The element used to kill cancer cells is: Californium.

Why cs used in photoelectric cell?

The ionization enthalpy of K and Cs is less than that of Li and therefore these metals easily lose electrons on exposure to light than lithium.That's the reason potassium and cesium are used in photoelectric cells rather than Cs.

Does solar power work by heat or light spectrum?

Both. Photoelectric cells work off light, and thermal collectors depend on heat.