Part of a scientific laboratory at the University of Cologne.The Bohr model of the atom, like many ideas in the history of science, was at first prompted by and later partially disproved by experiment.Science continually seeks to gain increased understanding and, where appropriate, the possibility for control of many specific aspects of the physical world. Its successes in achieving this goal stem directly from its ability to elucidate the foundational mechanisms which underlie nature's processes. Here, an image of "artificial" bioluminescence which has been induced in a tobacco plant by the use of genetic engineering.
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Science Instruments

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18th CENTURY SPENCER & PERKINS PEDOMETER US $15.07 Antique 14pc Mathematical Compass Set in Original Case US $35.99
A Victorian Sikes Hydrometer & Case c1860 US $15.05 ANTIQUE THEODILITE C.J.JOB & Co LONDON IN ORIGONAL BOX. US $118.97
ANTIQUE BEAUTIFUL BRASS MINIATURE POSTAL SCALE - GERMAN US $200.00 Rare Book Lighting Flashes & Electric Dashes Telegraph US $95.00
VINTAGE COMPASS & SUNDIAL PAT 1921 ORIG. BOX US $13.80 Vintage Science Lab Instrument Resistance Box Chicago US $9.99
Vintage I've Been X-Rayed Fold Back Button US $5.99 ANTIQUE hit miss Mogul GAS ENGINE MANZEL Steam fedoiler US $24.99
Early Star Dead Weight Gage Tester Complete Kit in Box US $139.95 VINTAGE Science Kit A.C. Galvanometer Box-Physics Labs US $9.99
Vintage CENCO Physics Spring Device-Science Labs US $9.99 Antique Brass Microscope & Case No 402690 US $45.21
Rare 19c Antique Microscope Slide Eggs of Butterflies US $37.67 MICROSCOPE BY WATSON LONDON C1900 US $37.67
Antique Pocketwatch Pocket Sundial With String Gnomon US $300.00 Antique Electric Toy Motor H Boman Malmo Sweden US $49.99
Vintage - Wooden encased ear syringe US $9.99 ANTIQUE hit miss STEAM GAS ENGINE Air compressor Brass US $77.90
ANTIQUE APOTHECARY BALANCE SCALE WEIGHTS w CASE US $14.02 1930 Weston Electrical Instruments Catalog Meter/Tester US $20.50
OLD YAGLE APOTHECARY WEIGHTS w CASE DRUG STORE WEIGHTS US $13.51 Sawyer-Man ? Hand Blown Element Light Bulb 1900's ? US $9.99
Minty Busy Bee Cylinder Phonograph w/Deluxe Base US $394.89 Navy Type Loose Coupler Vintage Crystal Radio US $55.00
rare early Daugherty typewriter w/base lid s/n 1659 US $399.00 EXTREMELY HIGH QUALITY JUNGHAUS LUXOR CLOCK US $99.99
1910 Era, DIRECT CURRENT Watthour Meter from Duncan US $95.00 1892 Ball-Shaped Household TOBEY Gas Meter US $95.00
Antique motors: 4 old Erector set motors? 2-Structo & m US $11.50 Antique motors: Old small electric motor on wood base US $17.50
VINTAGE EARLY OAK CASED EVER READY TORCH US $7.52 ANTIQUE THERMOMETER US $8.95
Antique motor: OLD 1910 electric motor - red w/ belt dr US $17.50 Antique motor: OLD Albert little motor, looks complete US $5.00
VINTAGE Periscope Head Device-Physics Labs US $9.99 W. & L. E. Gurley Transit - Pre-1880 US $1,399.00
Keuffel & Esser Co. Compass US $69.99 ANTIQUE BRASS & LEATHER MARINE THREE DRAW TELESCOPE US $3.32
19th Century Mahogany Boxed Students Brass Microscope US $37.66 1905 Lightning Calculator Computer Antique US $135.00
Bxd Stanley Miniature Draughtsmans Drawing Instruments US $22.59 1800s Opera Glasses Rose MOP w Case US $160.00
1903 Adix Calculator Adder Antique US $495.00 EARLY 20TH C? BRASS/SILVER DIAL STANDING INSTRUMENT US $11.30
ANTIQUE SURVEYING THEODOLITE C1914 A&N.C.S.L WITH STAND US $75.35 Very good camera obscura C. Winter Vienna pre 1900 US $445.00
Logia Wimhurst Machine very fine 1920/30 US $545.00 antique sphygmomanometer US $9.99
TWO HORIZONTAL STEAM ENGINES FOR COMPLETION US $40.00 ANTIQUE W. ELLIOTT RULER PROTRACTOR DRAWING INSTRUMENT US $1.49
Victorian Bxd Miniature Drawing Instruments US $37.66 Vintage T Cooke London Early Brass Pocket Watch Compass US $33.15
1894 ASTRONOMY CELESTIAL NORTH,SOUTH HEMISPHERE Maps x2 US $10.00 early Teletype typewriter military Western Electric US $99.00
ANTIQUE BRASS MICROSCOPE BAKER 244 HIGH HOLBORN LONDON US $75.35 19th Centry Gilt Brass Single Drawer Pocket Telescope. US $57.20
Antique Brass Pocket Microscope Fieldwork & Exploration US $15.05 Antique Brass and Mahogany Wall Thermometer US $9.99
Antique Turn of the Century Brass Oak Desk Thermometer US $9.99 Antique Bigelow Boiler Co Steam Gauge Guage 12" Nickel US $225.00
1957 1st Ed. At the Sign of the Quadrant Blunt History US $150.00 Early Spanish Sundial Brass w/Wood Frame HORAS NUMERO US $175.00
Amazing c1900 Hammett’s Planisphere, Celestial Sky Map US $25.00 Samuel Thaxter & Son Marine dry card Compass US $45.00
Darton/Negretti Zambra Gimbaled Nautical Ship Barometer US $700.00 1800's H.Smith AutKompasKontroller Gillies Pat. Bergen US $600.00
The Monthly MICROSCOPICAL JOURNAL, April 1870. Stentor. US $15.07 Vintage Weston Electrical Plate current gauge US $5.00
Vintage Frey Science Ohm's Law Science/Elect Apparatus US $44.99 Antique motor: OLD electric Porter Motor K&D No. 2 RARE US $123.50
Antique motor: Little Hustler on wood base, 3.5 in tall US $22.50 RORSCHACH INK BLOTS PROJECTIVE TEST Record Form Images US $9.50
Pocket Watch Style WARNER'S ELECTRIC - Standard Time Co US $20.00 BURYING Telegraph Cables in New York City, antique.1887 US $12.00
HUGE LOT of 35 Mixed Physics Science Lab Equip/Supplies US $9.99 Lot of 10 VINTAGE Wire Triangles-Chem/Science Labs US $9.99
Lot of 6 VINTAGE Heavy Metal Small Clamps-Physic Labs US $9.99 VINTAGE Physics Large Ball & Ring-Science Labs US $9.99
VINTAGE Physics HUGE OHaus Weight Spring Scale US $9.99 VINTAGE Physic LINCO Rheostat Intensity Of Illumination US $18.99
ANTIQUE BRASS CANDY OR COOKING THEMOMETER US $9.95 scarce early Orga Privat typewriter German Bing Werke US $149.00
scarce Underwood typewriter tin lid case cover antique US $24.99 Vintage HUGE Chicago Apparatus Spring Scale-13 inches!! US $14.99
Bunnell Telegraph Key US $29.00 Vintage Keuffel and Esser Slide Rule With Original Case US $9.95
Vintage Sargent Welch Amperes Rule Apparatus-Physic Lab US $24.99 Vintage Lot of 3 WELCH Measuring Calipers/Leather Case US $19.99
Vintage SK Science Paper Tape Spark Timer-Physics Labs US $9.99 7 INTERESTING MICROSCOPE SLIDES US $15.00
J.K. Holmes London Astronomy Telescope Exc. incomplete US $39.00 Antique H. Darsonville thermometer, brass-copper case US $29.99
PHARMACY APOTHECARY PEPSIN DRUG AMBER GLASS BOTTLE US $9.99 Antique Boxed Set Weights F.Sartorius, Gottingen US $45.21
Antique Electrostatic Collection Wimshurst Friction US $152.50 VINTAGE JUSTRITE1240 LEAK DETECTOR BLOW TORCH SOLDERING US $8.99
Vintage EDUQUIP Optical/Spectrometer Kit-Science Labs US $9.99 19th Century Brass compass/divider/drawing instruments US $31.68
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Prices current as of last update, 03/09/10 4:17pm.
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