Speed of light :"Lightspeed" redirects here. For other uses, see Lightspeed (disambiguation) .
:For other uses of "speed of light", see speed of light (disambiguation)
The speed of light in a vacuum is an important physical constant denoted by the letter c for constant or the Latin word celerit more
History of saffron
fresco from the excavation of Akrotiri on the Aegean island of Santorini .
The history of saffron in human cultivation and use reaches back more than 3,000 years. and spans many cultures, continents, and civilizations. Saffron , a spice derived from the dried stigmas of t more
DNA repair
DNA repair refers to a collection of processes by which a cell identifies and corrects damage to the DNA molecules that encode its genome . In human cells, both normal metabolic activities and environmental factors such as UV light can cause DNA damage, resulting in as many as 1 mil more
Shen Kuo
Shen Kuo or Shen Kua () (1031 –1095 ) was a polymathic Chinese scientist and statesman of the Song Dynasty (960–1279). Excelling in many fields of study and statecraft, he was a mathematician , astronomer , meteorologist , geologist , zoologist , botanist , pharmacologist more
Antioxidant glutathione . The yellow sphere is the redox-active sulfur atom that provides antioxidant activity, while the red, blue, white, and dark grey spheres represent oxygen, nitrogen, hydrogen, and carbon atoms, respectively.
An antioxidant is a molecule capable of slowing or preventing th more