Calculation of percentages
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Did you know ? The rules that mathematical logic derives from the research of thinking are analogous to the rules of mathematical, especially algebraic, operations. The task of mathematical logic is actually the same as the task of traditional logic, namely to develop procedures by means of which we could verify the correctness of our logical conclusions, or in other words, by means of which we could distinguish valid conclusions from invalid ones.

Calculation of percentages

Percentage increase

Percentage change

Direct proportion

Indirect proportionality

Share in percentage

Profit from interest

Price without VAT

Price with VAT

Trade margin

Surcharge

Discount in percentage

 
Geometric calculations
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Did you know ? Táles (or Thales, Thalés) from Miletus was an ancient Greek pre-Socratic philosopher, mathematician, astronomer, statesman and engineer, the first representative of the Miletus school. According to Democritus, Thales' parents, Examys and Cleobulus, were descendants of the mythical founder of Thebes, Cadmus, and came from Phoenicia. Táles died at the age of 78. However, we certainly get most of our knowledge about Thales from the works of the great Greek philosopher Aristotle. In his work Metaphysics, he refers to Thales as the originator of philosophy - this opinion is also confirmed by Hegel.

Center of the triangle

Angles of a triangle

Polygon

Cube

Cylinder

Ellipsoid

Pyramid

Sphere

Sphere segment

Block

Cone

Circular segment

 
Physics calculations
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Did you know ? Physics is very important in many fields such as technology, medicine, cosmology, engineering and many others. Without physics, we wouldn't be able to understand how electrical devices, spaceships, or medical devices work, and we wouldn't even be able to explain how light, sound, or the gravitational field are created.

Newton's law of motion

Work done by a force

Kinetic energy

Gravitational field

Conservation of momentum

Newton's second law

Oscilating object

Law of Gravity

Snell's law of refraction

Electric potential

Ohm's law

Coulomb's law

 
TOP SCIENTISTS AND INVENTORS
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Albert Einstein

Isaac Newton

Charles Darwin

Galileo Galilei

Nikola Tesla

Marie Curie

Stephen Hawking

Richard Feynman

Johannes Kepler

Louis Pasteur

Thomas Alva Edison

Alan Turing

James Clerk Maxwell

Werner Heisenberg

Erwin Schrödinger

Blaise Pascal

Archimedes

Niels Bohr