novaspirin ne demek?
- Formülü O=(OCH2)(CO)=C=(CH2COOC6H4COOH)2, mol kütlesi 444,1 g, olan, romatizma hastalığı tedavisinde ve antiseptik olarak kullanılan , suda çözünen, beyaz toz halinde bir madde.
novasurol
- Sodyum civa klorofenoksi asetat ve dietil malonilürden oluşan , idrar söktürücü ve Frengi hastalığı için kullanılan , suda çözünen ve beyaz kristal halde bir çift tuz.
nova
- Parlaklığı birdenbire artan, değişen yıldız.
- Parlaklığı birden bire (on-onüç kadir) artan değişen yıldız.nova'lar başlangıçta yeni doğmuş yıldızlar sanılmıştır.
Such appearances are supposed to result from cosmic collisions, as of a dark star with interstellar nebulosities.- Star that ejects some of its material in the form of a cloud and become more luminous in the process.
- Nova.
- New star, usually appearing suddenly, shining for a brief period, and then sinking into obscurity.
- Star that abruptly increases in brightness by a factor of a million A nova is caused in a binary star system where hydrogen-rich material is transferred to the surface of a white dwarf until sufficient material and temperatures exist to kindle explosive nuclear fusion.
- Star that flares up to several times its original brightness for some time before returning to its original state.
- Star which suddenly becomes many times brighter than previously, and then gradually fades.
- Star that explodes, temporarily increasing its brightness 100000 or more.