New post in Geometry

When will the velocity of a particle be perpendicular to it's initial velocity?

May 17th, 2020

Perspective Redux (why objects seem smaller as the distance increases)

March 13th, 2020

How to determine Center of Gravity?

April 25th, 2020

Why Dot Product is Scalar? why not vector? as cross product is vector?

August 9th, 2022

What is the meaning of inclination $1$ in $x$?

September 3rd, 2020

How to determine the minimum force in these questions?

August 6th, 2020

Why do far away objects appear to move slowly in comparison to nearby objects?

August 2nd, 2022

Is there a geometric interpretation of the spacetime interval?

October 14th, 2020

Why are three parameters required to express rotation in 3 dimension?

August 12th, 2022

Does Pythagoras theorem hold for length contraction according to Special relativity?

July 21st, 2021

Geometrical interpretation of the Dirac equation

November 2nd, 2020

Do perfect spheres exist in nature?

August 1st, 2022

What's the dimensionality of a solid angle?

June 1st, 2020

Why sphere minimizes surface area for a given volume?

December 8th, 2020

Triple-right triangle experiment: what's the minimum distance?

December 27th, 2020

Can an angle be defined as a vector?

August 1st, 2022

Is Dyson Sphere a stable construction?

April 8th, 2020

Gravitation is not force?

September 12th, 2020

Given two vectors (with no common point), is a dot product between them possible?

April 24th, 2020

How is Chasles' Theorem, that any rigid displacement can be produced by translating along a line and then rotating about the same line, true?

October 25th, 2020

Proof/explanation that Sun is bigger and more distant from Earth than Moon is, Middle Age technology allowed only

November 12th, 2021

Why does the light side of the moon appear not to line up correctly with the evening sun?

August 1st, 2022

How did they know the radius of the earth in ancient times?

April 15th, 2022

In a ball with random thread/strings, how does the density of threads/strings change with radius?

March 28th, 2020

Is there a proof that the set of real numbers can exactly represent distances?

May 5th, 2020

If diverging rays never meet, why do parallel rays meet at infinity?

January 6th, 2022

How many times can light revolve around a black hole?

March 11th, 2020

What is the exact meaning of homogeneity in cosmology?

August 1st, 2022

How far into space does one have to travel to see the entire sphere of earth?

February 17th, 2020

Is it possible for a physical object to have an irrational length?

August 8th, 2022