- technetium lines
- líneas de tecnecio
English-Spanish dictionary of astronomy terms. 2014.
technetium lines
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Technetium — molybdenum ← technetium → ruthenium Mn ↑ Tc ↓ Re … Wikipedia
Merrill , Paul Willard — (1887–1961) American astronomer Merrill was born in Minneapolis, Minnesota, and graduated from Stanford University in 1908. He obtained his PhD in 1913 from the University of California. After teaching at the University of Michigan from 1913 to… … Scientists
star — starless, adj. /stahr/, n., adj., v., starred, starring. n. 1. any of the heavenly bodies, except the moon, appearing as fixed luminous points in the sky at night. 2. Astron. any of the large, self luminous, heavenly bodies, as the sun, Polaris,… … Universalium
Ida Noddack — (25 February 1896 1978), née Ida Tacke, was a German chemist and physicist. She was among the first physicists to propose nuclear fission. With her husband Walter Noddack she discovered element 75 Rhenium. Background Ida Noddack was born in Wesel … Wikipedia
Nucleosynthesis — Nuclear physics Radioactive decay Nuclear fission Nuclear fusion Classical decays … Wikipedia
Stellar classification — In astronomy, stellar classification is a classification of stars based on their spectral characteristics. The spectral class of a star is a designated class of a star describing the ionization of its chromosphere, what atomic excitations are… … Wikipedia
Nuclear medicine — Intervention ICD 10 PCS C ICD 9: 92 … Wikipedia
radioactivity — /ray dee oh ak tiv i tee/, n. Physics, Chem. the phenomenon, exhibited by and being a property of certain elements, of spontaneously emitting radiation resulting from changes in the nuclei of atoms of the element. Also called activity. [1895… … Universalium
Sellafield — Aerial view of the site … Wikipedia
Bohrium — (pronEng|ˈbɔəriəm) is a chemical element in the periodic table that has the symbol Bh and atomic number 107.It is a synthetic element whose most stable isotope, Bh 270, has a half life of 61 seconds. Chemical experiments confirmed bohrium s… … Wikipedia
Dmitri Mendeleev's predicted elements — Professor Dmitri Mendeleev published the first Periodic Table of the Atomic Elements in 1869 based on properties which appeared with some regularity as he laid out the elements from lightest to heaviest.[1] When Mendeleev proposed his periodic… … Wikipedia
