Hello Everyone,
As I informed you earlier we are going to release Prelims 2026 Quick Revision Materials for Economy, Environment, Science & Technology, Geography, and International Relations.

These Materials cover Previous Years’ Questions Content, Current Affairs, and core concepts. They will be uploaded soon on our channel and the QualifyIAS website.

I had initially planned to release them last month, but due to a heavy workload we couldn’t complete them on time. I hope these materials will provide some direction for your preparation.

Will be uploaded soon

Hologram Technology

Definition:
Holography is a technique that records and reconstructs three-dimensional (3D) images by capturing both the intensity and phase of light waves using coherent light (laser).

Principle:
Based on Interference of Light and Diffraction of Light.
A laser beam is split into:
Object beam (reflected from object)
Reference beam (direct)
Their interference pattern is recorded on a photosensitive medium.
When illuminated, it reconstructs a 3D virtual image with depth and parallax.

Applications (with examples):
1) Security: Holograms on currency notes, passports, credit/debit cards to prevent counterfeiting
2) Medical field: 3D visualization of organs for surgical planning and diagnostics
3) Telecommunication: Holographic telepresence (virtual meetings, remote interaction)
4) Entertainment: Virtual performances (e.g., deceased artists recreated on stage)
Data storage: Holographic data storage systems with high capacity
5) Defense: Simulation, battlefield visualization, pilot training.

Remembering the great personality, humanist, and architect of our nation, Babasaheb DR B. R. Ambedkar, on his birth anniversary, who worked relentlessly to uplift the poor, downtrodden, and vulnerable sections of society.

Here is the IR and Geography Maps Quick Revision material

Going to be a historic moment. At the same time, if poor and middle-class people get more opportunities in politics, it will truly lead to a more positive outcome for India’s democracy and its future.

Apples are being grown in Anantapur, Andhra Pradesh. Growing them in such a hot, dry area where temperatures can go up to 45°C really shows how much crop biotechnology has improved.

Looking for UPSC Prelims and Mains content writer.

Those who have given UPSC Mains at least once and not appearing for 2026 may message this number 93118 40789.

Vacancy -01

Here is the SADHYAM Science and Technology Quick Revision Material for Prelims 2026. It covers PYQs, current affairs, and basic concepts in one place. Its major objectives is to provide the right direction and improve your overall score.

Vacancy is still opened.
Eligible people may apply
You message to the WhatsApp number given.

The last book i.e Environment of SADHYAM Prelims 2026 Quick Revision Material will be released Today or Tomorrow.
We are trying our best to make it easy and convenient to read.

Those who have seen and read Economy, IR and Mapping, and Science and technology may give feedback regarding the books and content.

Some students are asking can we rely on your books completely.

I would never say one book or books will give complete knowledge for the exam.

Just use them as per your needs and leave what is not required for you.
You should show discretion while reading any content or book.
You should select what to read and what not to read from any institute book or material.

Here is the SADHYAM Prelims 2026 Environment Quick Revision Material, covering previous years’ content, current affairs, and basic concepts. We have tried our best to present the right content in a simple and easy-to-understand manner. However, as mentioned earlier, do not depend entirely on any single source. Use these materials according to your requirements and your understanding of PYQs. Conceptual clarity, confidence, and common sense are equally important for this exam. Do multiple Revisions. Keep working hard.