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
Rudolf 'Rudi' Vrba, born Walter Rosenberg (September 11 , 1924 – March 27 , 2006 ), was a professor of pharmacology at the University of British Columbia . He came to public attention in 1944 when, in April that year, he and a friend, Alfréd Wetzler , became the second and third more
Deoxyribonucleic acid (DNA) is a nucleic acid that contains the genetic instructions used in the development and functioning of all known living organisms . The main role of DNA molecule s is the long-term storage of information . DNA is often compared to a set of blueprints, since it cont more
Verbascum thapsus (; Great Mullein or Common Mullein) is a species of mullein native to Europe , northern Africa and Asia , and introduced in the Americas and Australia .
It is a hairy biennial plant that can grow to 2 m or more tall. Its small yellow flowers are dens more
Chemical warfare involves using the toxic properties of chemical substance s to kill, injure or incapacitate an enemy .
Chemical warfare is different from the use of conventional weapon s or nuclear weapon s because the destructive effects of chemical weapons are not primarily du more