Diamond sparkles due to the total internal reflection coupled with large refractive index of diamond. Total internal reflection occurs when a light ray travels from denser (higher refractive index)to the rarer medium(lower refractive index) and the angle of incidence is more than critical angle which brings back light back in the same medium. Critical angle is the angle at which angle of refraction of refracted ray becomes .
Diamond has a very high refractive index. The critical angle for diamond is only 24° because the refractive index of diamond is 2.42. So, many rays trying to cross the diamond-air interface are incident at angles greater than the critical angle. The faces of the diamond are cut in such a way that most rays inside the diamond undergo total internal reflection. For example, most rays entering from the top of a properly cut diamond undergo multiple total internal reflections and emerge from the top face. After many such reflections, the colors in the light are seprated , and seen individually.But if we take a similarly cut piece of glass, a large number of incident rays emerge on the other side of the glass. Thus, the diamond sparkles in comparison, because the eye receives much more light from the diamond than it does from the glass.
A marvelous experience with Abhyas. I am glad to share that my ward has achieved more than enough at the Ambala ABHYAS centre. Years have passed on and more and more he has gained. May the centre flourish and develop day by day by the grace of God.
One of the best institutes to develope a child interest in studies.Provides SST and English knowledge also unlike other institutes. Teachers are co operative and friendly online tests andPPT develope practical knowledge also.
About Abhyas metholodology the teachers are very nice and hardworking toward students.The Centre Head Mrs Anu Sethi is also a brilliant teacher.Abhyas has taught me how to overcome problems and has always taken my doubts and suppoeted me.
It was a good experience with Abhyas Academy. I even faced problems in starting but slowly and steadily overcomed. Especially reasoning classes helped me a lot.
My experience was very good with Abhyas academy. I am studying here from 6th class and I am satisfied by its results in my life. I improved a lot here ahead of school syllabus.
I have spent a wonderful time in Abhyas academy. It has made my reasoning more apt, English more stronger and Maths an interesting subject for me. It has given me a habbit of self studying
It has a great methodology. Students here can get analysis to their test quickly.We can learn easily through PPTs and the testing methods are good. We know that where we have to practice
My experience with Abhyas is very good. I have learnt many things here like vedic maths and reasoning also. Teachers here first take our doubts and then there are assignments to verify our weak points.
Abhyas Methodology is very good. It is based on according to student and each child manages accordingly to its properly. Methodology has improved the abilities of students to shine them in future.
Abhyas is a complete education Institute. Here extreme care is taken by teacher with the help of regular exam. Extra classes also conducted by the institute, if the student is weak.