9 results for "kimia"
Isotopes are variants of the same chemical element with the same number of protons but different numbers of neutrons. This slight difference results in different physical properties, enabling a wide range of applications from carbon dating to cancer treatment. This article explores the basic concept of isotopes, nuclear stability, and how they shape our understanding of the world.
Chlorophyll is a green pigment that allows plants to convert sunlight into chemical energy through photosynthesis — a process that forms the basis of almost all life on Earth.
Catalysts are substances that speed up chemical reactions without being consumed, and they are the backbone of modern industry and the basis of all biological life.
Molecular machines are nanometer-sized biochemical structures that perform specific mechanical work — from transporting materials within cells to synthesizing proteins. They occur naturally in all living organisms and have been artificially designed since 1994. In 2016, three scientists were awarded the Nobel Prize in Chemistry for their revolutionary achievements in designing synthetic molecular machines. Their importance goes beyond basic science: they are the foundation of future medical technology, including targeted drug delivery and molecular computers.
Human nose is a highly sensitive chemical analyzer, capable of detecting some substances at concentrations as low as one molecule per trillion molecules of air — more sensitive than many laboratory instruments.
The modern mirror we use today originated from the invention of a German chemist in the 19th century, but the history of human face reflection apparently began thousands of years ago, from pools of water to obsidian stones.
A small fire occurred at the Mariel Special Development Zone (ZEDM) Container Terminal in Cuba on Monday morning due to a chemical spill that ignited when it came into contact with water. The fire was controlled without any injuries, and operations returned to normal by midday.
In the middle of the Karakum Desert, Turkmenistan, the 70-meter-wide Darvaza gas crater has been burning since a deliberate fire in 1971 — caused by a Soviet drilling failure. This phenomenon is not only a tourist attraction but also an open-air geochemical laboratory for the study of methane, climate emissions, and the resilience of Earth's systems to human disturbances.
Since the early 21st century, scientists have confirmed that the human brain emits weak light—not via electricity or heat, but through a chemical bioluminescent process involving free radicals and mitochondria. This phenomenon, known as 'biophotons', was first quantitatively measured in 2009 in Japan using ultra-sensitive cameras in absolute darkness. Though its brightness is only **1/1000 billion times weaker than visible light detectable by the human eye**, it is not mere metabolic noise—rather, it displays organized patterns correlated with cognitive states, sleep, and neurological disorders such as epilepsy and Alzheimer’s disease. This discovery opens doors to radiation-free imaging technologies, early diagnosis of neurological diseases, and a revolutionary understanding of how information may be processed quantum-mechanically within the central nervous system.