History – Page 3 – Science Observer

The Transistor: The Tiny Invention That Changed the World

The transistor is one of the most important inventions in human history — a microscopic electronic component that made modern computers, smartphones, and the entire digital world possible. Despite its…

deka October 13, 2025

History Science

The History of Electrical Engineering: From Sparks to Smart Systems

The story of electrical engineering is one of humanity’s greatest achievements — a journey from mysterious sparks of static electricity to the intelligent systems that power our modern world. This…

deka October 10, 2025

Be Smart History New Discoveries

The Umbrella: A Simple Invention That Changed Human Comfort

The umbrella is one of the oldest and most practical inventions in human history. Designed to shield people from rain and sunlight, it combines simplicity, elegance, and function. Over the…

deka October 10, 2025

Be Smart Earth & Moon History

Earth’s Core: Structure and How It Was Discovered

The core of Earth is the central part of our planet, lying beneath the mantle and making up about one-third of Earth’s total mass. It is divided into two distinct…

deka September 28, 2025

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Robert Bartini: The Visionary Aircraft Designer

Robert Ludvigovich Bartini was born in 1897 in Fiume, then part of the Austro-Hungarian Empire (today Rijeka, Croatia). Coming from a noble Italian family, he showed early interest in engineering…

deka September 28, 2025

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Nikola Tesla: Biography and Inventions

Nikola Tesla was born on July 10, 1856, in Smiljan, a village in the Austrian Empire (modern-day Croatia). From a young age, Tesla showed remarkable memory and imagination, often visualizing…

deka September 28, 2025

History Science

Electrical Engineering: History and Modern Developments

Electrical engineering emerged in the 19th century with the discovery of fundamental laws of electricity and magnetism. The work of Michael Faraday, James Clerk Maxwell, and Georg Ohm laid the…

deka September 27, 2025

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The Periodic Table of Mendeleev: Structure of the Chemical World

The Periodic Table of Elements was first created by Russian chemist Dmitri Mendeleev in 1869. He organized the known chemical elements according to their properties and atomic weights. Remarkably, Mendeleev…

deka September 23, 2025

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Genetics: The Science of Heredity and Variation

Genetics is the branch of biology that studies genes, heredity, and variation in living organisms. It explains how traits are passed from one generation to another through DNA. From eye…

deka September 23, 2025

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Physics: From Antiquity to Modern Times

The origins of physics trace back to ancient civilizations, where people sought to explain natural phenomena through observation and reasoning. In Mesopotamia and Egypt, early records describe the motion of…

deka September 22, 2025