Optical Mineralogy | Uniaxial Indicatrix | Geology | GATE GG | UPSC | IIT JAM | CSIR NET

[@pradeepgautam706]

Sir very helpful topic

[@aditibagchi-2075]

You r going grt sir!!!! It's really helpful and pls sir after optical mineralogy , also explain petrology!!!!

[@Geo_Mind]

sure in coming videos..keep sharing among your friends.

[@priyaranjankar5114]

But sir app boht hi achhe se explain karte ho or main aap hi ki videos se boht kuchh sikha hun.....aapki videos actually boht helpful hai ...so thanks a lot again sir 🙏🏻

[@Geo_Mind]

Thanks 🙂

[@norfadirawahib270]

Thank you sir for your nice video. I cut the sapphire crystal and maybe the orientation is not so good. How we can determine the right c axis using a double polarised microscope? We have to find a point where there is no light going through the crystal when our eyes are perpendicular and parallel to the c axis of the crystal. By doing so, we can determine the angle of the right c axis. Is it correct?Thanks in advance.

[@lordsandy8685]

Great , Thanks.. please make a Video on Interference figures and Biaxial

[@pritipravapanda2111]

Really it is very helpful Sir 🙏😊

[@Geo_Mind]

Thank you for your motivating comment..

[@chandra3386]

Hats off u sir

[@vinayaksoni4279]

Keep continue sir Bahut time ho gya koi lecture nhi ayaa We are waiting sir🤗🤗🤗

[@Geo_Mind]

Soon

[@gaurabdeb5283]

Thank You Sir ❤..

[@shaurya4418]

Sir if there will be any doubt then? Should i approach refrence books or can ask from you?

[@Geo_Mind]

you can ask ...also I have provided the sources I am using.

[@gracenakyanzi2941]

Where is the telegram link

[@Geo_Mind]

t.me/+VOV8DwQ6le6IIPqp

[@gracenakyanzi2941]

@@Geo_Mind Thankyou so much

[@anweshanasreen2874]

sir how can i access the pdf

[@priyaranjankar5114]

thank you so much sir for your suitable explanation......sir can you please make videos relating our entrances like IIT JAM ....I'm preparing for but I'm not taken any subscriptions ...

[@geo-logic]

Thankyou sir

[@abhilashchandra4689]

Why in double refraction only 2 rays emerge, that is O ray and E ray why not more than that? why only 2 rays are emerging and not 3 rays or 4 rays?

[@Geo_Mind]

because the ray can obey snell's law or not ..there are only two conditions. PS the ' why ' is irrelevant... because 'Why' never satisfy any scientific question..rather you should ask ..How!

[@shrutishreedas9700]

I understood how to determine the sign,but couldn't get what is indicatrix actually and what are it uses,why is it formed? Please explain Sir 🙏

[@Geo_Mind]

It is the Geometrical representation of RI of the mineral, so the axis are proportional to the RI, for eg If a Uniaxial indicatrix is a prolate ellipsoid it means its E ray RI is larger compared to O ray RI direction. for better understanding watch my previous video on refractometry and Isotropic minerals, at the end you will find.

[@shrutishreedas9700]

@@Geo_Mind ok sir🙏 thanku😌

[@the-thakur]

White board pr samjhate to jyada better tha

[@janvigupta5279]

Sir aap khud hi confuse ho jate ho .... so plzz try to speak in hindi because your English is too confusing 🙃

[@Geo_Mind]

Thanks for your concern , I will in future videos.

[@thatguyshorts904]

sir thida hindi main padhao to jada smjh aega

[@Geo_Mind]

Ok bro , may be in next videos, although most of my videos are in hindi. 🙂

[@thatguyshorts904]

@@Geo_Mind oki sir i was talking only geology section.btw tysm because these lectures are doing great in my upsc preperations