Browse Reference Articles
91 to 100 of 380 articles
-
Periodic table
The periodic table of the chemical elements is a tabular method of displaying the chemical elements, first devised in 1869 by the Russian chemist Dimitri Mendeleev. Mendeleev intended the table to ... > more -
Radiocarbon dating
Radiocarbon dating is a radiometric dating method that uses the naturally occurring isotope carbon-14 to determine the age of carbonaceous materials up to ca 60,000 years. Within archaeology it is ... > more -
Radical (chemistry)
In chemistry, radicals (often referred to as free radicals) are atomic or molecular species with unpaired electrons on an otherwise open shell configuration. These unpaired electrons are usually ... > more -
Space elevator
A space elevator is a theoretical structure designed to transport material from a planet's surface into space. Many different types of space elevators have been proposed. They all share the goal of ... > more -
Nuclear Energy
Renewable Energy
Energy and the Environment
Weapons Technology
Physics
Environmental Science
Nuclear fission
Nuclear fission is a process in nuclear physics in which the nucleus of an atom splits into two or more smaller nuclei as fission products, and usually some by-product particles. Hence, fission is a ... > more -
Radiography
Radiography is the creation of images by exposing a photographic film or other image receptor to X-rays. Since X-rays penetrate solid objects, but are weakened by them depending on the object's ... > more
Search ScienceDaily
Number of stories in archives: 137,328

