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The 'sparkling' of diamonds is due to the way the diamonds are cut, plus the fact that diamonds have a high index of refraction results in the total internal reflection of light. The high index of refraction means that diamonds have a very small minimum critical angle (recall the diamond to vacuum in the observation table). The minimum critical angle in a diamond is 24.4 degrees. Therefore, a lot of the incident light experiences total internal reflection inside the diamond. A ray of light can reflect several times in the diamond before exiting through the top of the diamond.

Fibre optics is a technology that uses light to transmit information along a glass table. To achieve the light not escaping as it travels through the cable, it must have a small critical angle so that the light entering it will have an angle of incidence greater than the minimum critical angle for this medium.

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12y ago
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10y ago

One advantage is that less light is lost than the quantity of light that is lost in a mirror.

I do not know anymore advantages, I was looking up the same question and that was all I found. Hope this helps:)

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15y ago

with two right angled prisms is often used to bend the path of light. it is the work of T.I.R. that shortens the length of the light

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10y ago

uses of total internal reflection

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11y ago

by the prism

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Q: What are the uses of total internal reflection?
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Working Principle of ofc?

Total Internal Reflection


Why can a laser beam travel through a curled-up optical fiber?

The laser shines through the fiber optic cable because the edge of the inside of the cable can act as a mirror. This is called internal reflection.


What is the relation between internal resistance and load resistance when current is constant in the circute?

The total resistance of a circuit is the sum of the supply's internal resistance and its load resistance, because they are in series with each other. This is true regardless of the magnitude of, or the variation in, the current.


What is unsustainable technology?

An unsustainable technology is one which uses non-renewable resources. An example of an unsustainable technology is the internal combustion engine, which relies on non-renewable fossil fuels.


If three cells that each have an emf 1.5 volts and an internal resistance of 2 ohms are connected in series to a resistor of 44 ohms what is the current through the resistor?

Taking the question at face value, the internal resistances will be treated like "real" resistors in the circuit. That means we have 3 batteries of 1.5 volts each connected in series with their 2 ohms + 2 ohms + 2 ohms of internal risistance, or 6 ohms of internal resistance. The 6 ohms of internal resistance acts in series with the 44 ohms of resistance stated as the value of the resistor. The total resistance is simply the sum of the two, or 6 ohms + 44 ohms or 50 ohms of total resistance. The batteries are connected in series, and their individual voltages are added to find total applied voltage. That means 1.5 volts + 1.5 volts + 1.5 volts or 4.5 volts will be the total applied voltage. Total current in the circuit (and through our 44 ohm resistor) will be the voltage applied divided by the resistance ( I = E / R), which, in this case, is 4.5 volts / 50 ohms which equals 0.07 amps. That's 7/100ths of an amp, or, in electronics speak, 70/1000ths of an amp, or 70 milliamps, or 70mA of current. The circuit is a series circuit, and that current, the total circuit current, will be flowing through each and every component of the circuit. That's what a series circuit means.

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