Explanation

• The famous Dancing Girl is a bronze statuette discovered at Mohenjo-Daro in 1926 by archaeologist Ernest Mackay.
• It is approximately 4,500 years old.
• It belongs to the Indus Valley Civilization.
• The statuette is about 10.5 cm (4.1 inches) tall.
• It represents the artistic skills and metal-casting techniques of the ancient Indus Valley people.

Last verified on 10-11-2026

Explanation

• The famous book "Al-Qanun" (The Canon of Medicine) was written by Abu Ali Sina.
• It is also known as Avicenna. 
• The book covers medicine, diseases, and treatments.

Last verified on 27-04-2026

Explanation

• Al-Biruni was a famous Muslim mathematician, astronomer, and geographer.
• He calculated the Earth's radius using trigonometric principles and measurements of the angle of dip from a mountain.
• His estimated radius was approximately 6,339.6 km, which was remarkably close to the modern mean radius of about 6,371 km.
• He lived from 973 CE to 1048 CE.

Last verified on 09-11-2026

Explanation

• Ibn al-Haytham is known as the Father of Modern Optics.
• He made groundbreaking discoveries about light and vision.
• His famous book is Kitab al-Manazir (Book of Optics).
• His research was done around 1011–1021 AD.

Last verified on 27-04-2026

Explanation

• The holy book of Buddhism is called the Tripitaka.
• It contains the teachings of Gautama Buddha.
• It is also known as the “Three Baskets” of Buddhist scriptures.
• It was compiled after the death of Buddha in early Buddhist councils.
• It guides Buddhist teachings, discipline, and philosophy.

Last verified on 12-06-2026

Explanation

Last verified on 09-11-2026

Explanation

• The sacred book of Zoroastrianism is the Zend Avesta (Avesta).
• It contains teachings of the prophet Zoroaster (Zarathustra).
• It focuses on the concept of good vs evil (Ahura Mazda vs Angra Mainyu).
• It is one of the oldest religious texts in the world.
• It was originally written in the Avestan language.

Last verified on 27-04-2026

Explanation

PSTN: Public Switched Telephone Network

- A worldwide network of traditional telephone systems.

- Used for voice communication through telephone lines.

Last updated 09 Nov 2026 by NA

Explanation

• The Gobi Desert is a vast, arid region in northern China and southern Mongolia.
• Area of the Gobi Desert: 1.295 million km²
• Elevation of the Gobi Desert: 1,580 m
• Length of the Gobi Desert: 1,500 km (930 mi)
• Region of the Gobi Desert: Inner Mongolia

Last updated 08 Nov 2026 by NA

Explanation

• Summer Solstice in the Southern Hemisphere
• - Date: 21 or 22 December.
• - Significance: Longest day and shortest night of the year.
• - Cause: The Southern Hemisphere is tilted towards the Sun.
• - Sun's position: Directly overhead at the Tropic of Capricorn (23.5° South).

Additional Information:

The summer solstice in the Northern Hemisphere occurs during June (20 or 21 June)

Last updated 08 Nov 2026 by NA