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Q: What is the advantage of using a light beam as a pointer to measure all small deflections?
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Optical lever uses a light beam as a pointer to measure small deflectionsExplain the advantage of this?

It is massless and it is not affected by gravity.


How can you do an Experiment on angle of reflection and angle of incidence?

Set up a light source that has narrow beam (a laser pointer is perfect for this).Point it at a mirror,measure the angle of incidence and of reflection.rotate the mirror,measure the angles,continue through many angles,tabulate and graph the results.


What is a presentation pointer in a computer program?

A presentation pointer is a light (usually red) that you use so you don't have to touch the object the presentation is protuding of off.


What sends a narrow intense beam of light?

a small laser, or a laser pointer


What are the advantages of installing light timers?

The main advantage of installing light timers is that the householder can control exactly when the lights switch on and off. Not only does this act as an excellent security measure, it also has the potential to save electricity.


When does a mouse pointer change to a pointing hand icon?

As we high light the pointer on the topic or caption


Who try to measure the speed of light?

Roemer was the first to measure the speed of light.


What is the difference between a laser pointer and an infrared laser pointer?

An infrared pointer uses light that is mainly in the infrared spectrum, and so is mostly invisible to humans. A laser pointer in general refers to any device using a beam of light to mark an object. Both use the same basic technology. The only difference is the wave length. IR lasers are outside of the visual spectrum where as standard laser pointers are within the visual spectrum.


Which demostrates that light travels in straght line?

I would have thought a laser pointer would do the trick.


What is the advantage of smooth and light pollen?

advantages of smooth and light pollen


What can scientist measure when light rays are emmitted by a moving source?

Scientist measure when light rays are emitted by a moving source the speed of light. Depending on the moving force they can also measure bending light.


The intensity of light waves is a measure of what?

The intensity of light waves is a measure of the energy that is carried by the waves. Light waves are electromagnetic waves.