• WordNet 3.6
    • n strontium a soft silver-white or yellowish metallic element of the alkali metal group; turns yellow in air; occurs in celestite and strontianite
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Webster's Revised Unabridged Dictionary
    • n Strontium (Chem) A metallic element of the calcium group, always naturally occurring combined, as in the minerals strontianite, celestite, etc. It is isolated as a yellowish metal, somewhat malleable but harder than calcium. It is chiefly employed (as in the nitrate) to color pyrotechnic flames red. Symbol Sr. Atomic weight 87.3.
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Century Dictionary and Cyclopedia
    • n strontium Chemical symbol, Sr; atomic weight, 87.37; specific gravity, 2.54. A dark-yellow metal, less lustrous than barium, malleable, and fusible at a red heat. When heated in air, it burns with a bright flame to the oxid. It decomposes water at ordinary temperatures, evolving hydrogen, and uniting with the oxygen of the water to form the oxid strontia. It does not occur native. The chief strontium minerals are the carbonate (strontianite) and the sulphate (celestine). Strontium also occurs as a silicate in the mineral brewsterite. It has been detected in the waters of various mineral springs, as well as in sea-water, and in the ashes of some marine plants. Salts of strontium are chiefly used in pyrotechny, imparting an intense red color to flames.
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Chambers's Twentieth Century Dictionary
    • n Strontium stron′shi-um a yellowish, ductile, malleable metal somewhat harder than lead, existing as a carbonate in the mineral Strontianite (first found in 1790 near Strontian in Argyllshire), and as a sulphate in the mineral known as Celestine
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Webster's Revised Unabridged Dictionary
NL. See Strontia


In literature:

The chloride of calcium gives a red tinge, but not nearly so decided as the chloride of strontium.
"A System of Instruction in the Practical Use of the Blowpipe" by Anonymous
He will recognize it by the color; because strontium gives a red light which nothing else will give.
"Young Folks' Library, Volume XI (of 20)" by Various
Beryllium, it will be observed, is very simple, whereas calcium and strontium are complicated.
"Occult Chemistry" by Annie Besant and Charles W. Leadbeater
Apparently Bremer in 1898 was the first to introduce fluorides of calcium, barium, and strontium.
"Artificial Light" by M. Luckiesh
I placed the steel tank near the cage, uncoiled the hose attachment, unscrewed the top, and dumped in the salts of strontium.
"In Search of the Unknown" by Robert W. Chambers
Thus calcium, strontium, and barium are very much alike; so, too, are magnesium, zinc, and cadmium.
"An Elementary Study of Chemistry" by William McPherson
Ammonium carbonate is added to the filtrate; this precipitates calcium, strontium and barium.
"Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 1" by Various
Strontium colors the flame crimson.
"The Elements of Blowpipe Analysis" by Frederick Hutton Getman
Celestine is much used for the preparation of strontium hydrate, which is employed in refining beetroot sugar in Germany.
"Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 5" by Various
Mention is here made of the formation of saccharates of barium, strontium, and calcium in low concentrations.
"The Philippine Agricultural Review" by Various
The strontium iodide may also be used.
"Arteriosclerosis and Hypertension:" by Louis Marshall Warfield
Heat strontium theosulphate for fifteen minutes over a good Bunsen gas lamp and then for 5 minutes over a blast lamp.
"Scientific American, Vol. XXXIX.--No. 24. [New Series.], December 14, 1878" by Various
Lithium potassium sulphate, strontium-antimonyl dextro-tartrate, and lead-antimonyl dextro-tartrate are examples of this type of symmetry.
"Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 7" by Various
Strontium obtained from carbonate of strontia by Sir Humphry Davy.
"The Evolution of Photography" by John Werge
Isomorphous with heulandite is the strontium and barium zeolite brewsterite, named after Sir David Brewster.
"Encyclopaedia Britannica, 11th Edition, Volume 13, Slice 4" by Various
Strontium hydride behaves similarly.
"Encyclopaedia Britannica, 11th Edition, Volume 14, Slice 1" by Various
Bremer first suggested in 1898 for this purpose the fluorides of calcium, strontium or barium.
"Encyclopaedia Britannica, 11th Edition, Volume 16, Slice 6" by Various

In news:

Positron, Jubilant DraxImage Collaborate on Supply of Strontium-82, Rubidium -82 Generators.
Revision of D4328 - 08 Standard Practice for Calculation of Supersaturation of Barium Sulfate, Strontium Sulfate, and Calcium Sulfate Dihydrate (Gypsum) in Brackish Water, Seawater , and Brines.
Revision of D4328 - 08 Standard Practice for Calculation of Supersaturation of Barium Sulfate , Strontium Sulfate , and Calcium Sulfate Dihydrate (Gypsum) in Brackish Water, Seawater, and Brines.
Researchers showed off strontium iodized crystals, which school researchers have been working on producing for the past four years.
The fracking wastewater may contain metals released from the ground - such as barium, strontium and iron - as well as substances injected during the fracking operation.
Some toothpastes contain ingredients such as potassium nitrate or strontium chloride to help reduce tooth sensitivity.
U238, one of the natural isotopes that as a trace element may incorporate into the matrix of naturally forming barium or strontium sulfate scale and make it a very low level radioactive material (NORM scale).

In science:

Ruthenocuprates are in a sense a hybrid of superconducting cuprates and the strontium ruthenate.
Route to Room-Temperature Superconductivity from a Practical Point of View
Figure 5 presents an example of spectrum synthesis in the region of the Sr II 4077.71 line, which was used to confirm the upper limit to the strontium abundance derived by the equivalent width analysis.
HE 0557-4840 - Ultra-Metal-Poor and Carbon-Rich
Up to this point, the observed sequence of phase transitions in strontium and the predicted sequence in calcium are identical: fcc → bcc → I41/amd → C2/c-12 (Sr-IV). The next higher-pressure phase of strontium, Sr-V, is an incommensurate host-guest structure.
Exotic behavior and crystal structures of calcium under pressure
Observation of the incommensurate barium-IV structure in strontium phase V.
Exotic behavior and crystal structures of calcium under pressure
It is known that some as-grown ferroelectric crystals, such as strontium barium niobate (SBN) [Fig.1(d-e)] or calcium barium niobate, consist of elongated ferroelectric domains oriented along its polar axis having random distribution of their size and orientation [11, 12, 13].
Parametric wave interaction in quadratic crystal with randomized distribution of ferroelectric domains
The presence of antiparallel ferroelectric domains can intrinsically depend on the specific growth technique, as is the case for strontium barium niobate (SBN, d33 = 12 pm/V) .
Random quasi-phase-matched second-harmonic generation in periodically poled lithium tantalate
Japan 65 1924-1926 Dunn K J and Bundy F P 1982 Pressure-induced superconductivity in strontium and barium Phys.
Assembling the puzzle of superconducting elements: A Review
Detailed Study of an Efficient Blue Laser Source by Second-Harmonic Generation in a Semimonolithic Cavity for the Cooling of Strontium Atoms.
Single barium ion spectroscopy: light shifts, hyperfine structure, and progress on an optical frequency standard and atomic parity violation
Improved three-dimensional control of a single strontium ion in an endcap trap.
Single barium ion spectroscopy: light shifts, hyperfine structure, and progress on an optical frequency standard and atomic parity violation
It has been observed throughout a variety of different electron systems including twodimensional electron systems with high magnetic fields, strontium ruthenate materials and cuprates (for a review, see Ref. ).
Nematic orders in Iron-based superconductors
The strontium uncertainty in the plot is a factor of 2 larger than published in .
Tests of local position invariance using continuously running atomic clocks
It requires two laser wavelengths for cooling, 397 (or 393) nm and 866 (or 850) nm (figure 8), but both can be produced by diode lasers (one frequency doubled) which makes this ion very attractive (strontium has similar advantages).
The Ion Trap Quantum Information Processor
On the other hand the copper spin–lattice relaxation rate (Ohsugi et al. (1991)) shows no sign of a pseudogap for any strontium concentration between 0.075 ≤ x ≤ 0.15.
The pseudogap in high-temperature superconductors: an experimental survey
Quenching could be used in realistic atomic systems such as calcium, strontium, or ytterbium which are currently of interest for frequency standards.
Improvement by laser quenching of an "atom diode": a one-way barrier for ultra-cold atoms
The most fully developed of these systems is strontium, with 87 Sr lattice clocks operating in Tokyo, Boulder, and Paris since 2006.
Searching for New Physics Through AMO Precision Measurements