Reference Terms
from Wikipedia, the free encyclopedia
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.
Note: The above text is excerpted from the Wikipedia article "Periodic table", which has been released under the GNU Free Documentation License.
Related Stories
1
2
Matter & Energy News
November 21, 2024
Nov. 12, 2024 — Global carbon emissions from fossil fuels have reached a record high in 2024, according to new ...
Nov. 6, 2024 — Thin, flexible device could help people with visual impairments 'feel' surroundings. Device comprises a hexagonal array of 19 actuators encapsulated in soft silicone. Device only uses energy when actuators change position, operating for longer ...
Oct. 23, 2024 — In the face of rising CO2 levels, scientists are searching for sustainable ways of pulling carbon dioxide out of the air, so-called direct air capture. A new type of porous material, a covalent organic framework (COF) with attached amines, stands ...
Oct. 17, 2024 — Researchers have developed a novel training protocol for brain-computer interfaces in a study with rhesus monkeys. The method enables precise control of prosthetic hands using signals from the brain alone. Researchers were able to show that the ...
Latest Headlines
updated 12:56 pm ET
Nov. 21, 2024 — Researchers have found a new way to improve a key element of thermophotovoltaic systems, which convert heat into electricity via light. Engineers designed a thermal emitter that can deliver high ...
Nov. 21, 2024 — Axions are the most likely candidate for enigmatic dark matter that dominates the universe. Astrophysicists are searching for evidence of high-mass axions produced during supernovae. Scientists ...
Nov. 21, 2024 — Scientists have developed a new protective coating that significantly extends the life of perovskite solar cells, making them more practical for applications outside the ...
Nov. 21, 2024 — The world's thinnest spaghetti, about 200 times thinner than a human hair, has been ...
Nov. 21, 2024 — Chlorophyll (a naturally occurring pigment involved in photosynthesis)-inspired molecules hold promise for developing next-generation ...
Nov. 21, 2024 — Protein design aims to create customized antibodies for therapies, biosensors for diagnostics, or enzymes for chemical reactions. An international research team has now developed a method for ...
Nov. 19, 2024 — A speed record has been broken using nanoscience, which could lead to a host of new advances, including improved battery charging, biosensing, soft ...
Nov. 18, 2024 — Water scarcity threatens the viability of hydropower and agriculture. A new study in the Andes shows sustainable irrigation and reforestation are the ...
Nov. 20, 2024 — A new study demonstrates a way to diminish the impact that tires have on the environment when they can no longer be used on vehicles. The process upgrades 6PPD -- a useful but environmentally harmful ...
Nov. 20, 2024 — A research team has developed a novel biomimetic speaking valve technology that could significantly increase the safety of tracheostomized ...