Sparkling of Diamond
Sparkling of Diamond
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.
Students / Parents Reviews [10]
Being a parent, I saw my daughter improvement in her studies by seeing a good result in all day to day compititive exam TMO, NSO, IEO etc and as well as studies. I have got a fruitful result from my daughter.
Prisha Gupta
8thMy 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.
Ayan Ghosh
8thAbout 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.
Shreya Shrivastava
8thIt 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.
Cheshta
10thA 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.
Archit Segal
7thMy experience with Abhyas academy is very good. I did not think that my every subject coming here will be so strong. The main thing is that the online tests had made me learn here more things.
Hiya Gupta
8thIt 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
Barkha Arora
10thAbhyas 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.
Om Umang
10thMy 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.
Shivam Rana
7thAbhyas 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.
