deka – Page 19 – Science Observer

Forensic Science: DNA Profiling, Fingerprint Analysis, and Their Limits

DNA profiling and fingerprint examination are among the best-known tools in modern forensic science. Television dramas often present them as near-perfect methods that can identify a criminal with absolute certainty.…

deka August 5, 2026

History Science Tesla&Co

Sergei Korolev: The Visionary Engineer Who Became a Father of Practical Cosmonautics

Sergei Pavlovich Korolev was the architect behind several achievements that opened the space age. Under his leadership, the Soviet Union launched the first artificial satellite, sent the first human into…

deka August 5, 2026

Challenges History Physics

The Manhattan Project and Today’s Nuclear Nightmare: How Humanity Reached a New Age of Atomic Danger

The Manhattan Project began as a secret wartime effort to build an atomic bomb before Nazi Germany could develop one. It succeeded with extraordinary speed, combining theoretical physics, industrial production,…

deka August 5, 2026

AI Hi-Tech News

Most In-Demand Professions in 2026: The Best Careers for Growth, Stability, and High Earnings

The job market in 2026 is being reshaped by artificial intelligence, demographic change, cybersecurity threats, healthcare shortages, and the global transition to cleaner energy. Some traditional office roles are becoming…

deka August 5, 2026

Be Smart History Science

The Renaissance Era: How Art, Science, and Humanism Transformed Europe

The Renaissance was one of the most influential periods in European history. Beginning in Italian cities during the fourteenth century and spreading across Europe over the following two centuries, it…

deka August 4, 2026

Be Smart History Inventions

X-Rays: How a Photograph of Röntgen’s Wife Revealed the Skeleton Inside Her Hand

In late 1895, German physicist Wilhelm Conrad Röntgen produced one of the most famous scientific images in history: a radiograph of his wife Anna Bertha’s left hand. The image did…

deka August 4, 2026

History Inventions Science

Plastic by Accident: How Bakelite and Cellophane Emerged From Experiments That Went Off Plan

Many transformative inventions begin with a failure, an unexpected residue, or a material that behaves differently from what its creator intended. Bakelite and cellophane are often described as accidental inventions.…

deka August 4, 2026

Hi-Tech Inventions New Discoveries

LiDAR Explained: How Laser Radar Creates Precise 3D Maps

LiDAR is one of the most important sensing technologies behind modern mapping, autonomous machines, forestry research, archaeology, atmospheric science, and planetary exploration. The name stands for Light Detection and Ranging.…

deka August 4, 2026

Hi-Tech KnowHow Smart Home

How Does an Air Conditioner Work and Which Type Should You Choose?

An air conditioner does more than blow cold air into a room. It removes heat from indoor air, transfers that heat outdoors, circulates the cooled air, and reduces humidity as…

deka August 4, 2026

Hi-Tech KnowHow Smart Technology

How to Choose the Best Laptop in 2026: A Practical Buying Guide

Choosing the best laptop in 2026 is more complicated than comparing processor names or buying the most expensive model available. Modern laptops differ significantly in battery life, display quality, artificial…

deka August 4, 2026