Scientific Instruments Collection<br/>Physics Instr. #18<br/><br/>the most common double refracting crystal is calcite crystal; the original source of calcite crystal was found in Iceland in the late 17th century and was exhausted prior to the 20th c.; it is possible that some of these crystals are Iceland spar; other double refraction crystals include zircon, quartz, and tourmaline (appears black and may be the crystal surrounded by cork)
Scientific Instruments Collection<br/>Physics Instr. #19<br/><br/>this grouping consists of two loose crystal prisms (one is a pyramid and the other is a rhomboid), a circular brass(?) lens-type prism, and two triangular-shaped mounted prisms; may go with Gurley Spectrometer 2010x.20.21; examples of fully assembled spectrometers/ spectroscopes with prisms in center of instrument are saved in the digital and vertical file
Scientific Instruments Collection<br/>Physics Instr. #13<br/><br/>dark-stained, wooden, shallow hat-like object; perhaps some kind of acoustic testing piece or a lid that could be secured on top of some kind of cylinder; appears to be handmade; comprised of about five separate pieces of wood secured by screws evident on underside; there are also four small holes on the underside that may have attached it to a cylinder or ??
Scientific Instruments Collection<br/>Physics Instr. #14<br/><br/>very heavy, on casters; this appears to some kind of homemade apparatus comprised of various electrical coils; the inventor/ maker was likely a former Union College professor of electrical engineering, Frederick Grover (see remarks for more info)
Scientific Instruments Collection<br/>Physics Instr. #15<br/><br/>this is a top of the line instrument per Rich Kremer; five large, multiple-leaf rotary knobs on the top panel of this instrument; dated based on auction record saved in folder; later models would place the rotary knobs below the top surface of the instrument and only have a dial exposed; this would benefit use in a lab where gases and dirt could contaminate exposed contacts (see remarks)
Scientific Instruments Collection<br/>Physics Instr. #11<br/><br/>seven detachable brass pegs/plugs (or "taper pins"?) between brass blocks; the pegs can be moved to alter the amount of resistance; very common instrument for an elementary physics lab; in a wooden beveled base with two terminals on the left-hand side, top-facing surface
Scientific Instruments Collection<br/>Physics Instr. #12<br/><br/>very heavy, metal balance scale with beveled metal base; large, circular pan to weigh items on; looks very similar to "Ohaus" brand triple beam balances, so perhaps was a precursor; need to examine in person to determine if there is a third beam and any markings
Scientific Instruments Collection<br/>Physics Instr. #9<br/><br/>per original catalog entry for this AC meter: "These light-weight, compact, long-scaled, portable ac instruments are designed for use in laboratory, production and general testing. 150 volt range at 115 volts, 60 cycles has a power consumption of 2.5 watts (2.5 volt-amperes). Voltmeters cover standard frequencies of 25 o 125 cycles. 5 ampere range at 5 amperes, 60 cycles has a power consumption of 0.50 watt (0.52 volt-ampere). All are hand-calibrated and are equipped with mirror scales and knife-edge pointers to eliminate parallax errors. Rated accuracy, 75% in horizontal position."
Scientific Instruments Collection<br />Electrical Engineering Instr. #12<br /><br />this instrument is used to measure the alternating current through any branch of electric circuit; this is larger than typical ammeters, mounted on a dark wood base, and labeled as a "Laboratory Standard" by the maker
Scientific Instruments Collection<br/>Physics Instr. #3<br/><br/>a very similar potentiometer is at Harvard (PDF in vertical and digital folders): "A potentiometer is an instrument for measuring the potential (voltage) in a circuit against a standard cell; for making highly accurate and precise general electrical measurements such as potential difference and current, also for measuring temperature and pH" - see remarks<br/><br/>MEDIUM<br/>wood, plastic, rubber, Bakelite, metal
Scientific Instruments Collection<br/>Physics Instr. #4<br/><br/>commonly used in a physics lab, usually with a linear scale; allows the attachment of light sources, lenses, and screens to observe and measure different optical experiments and phenomena; also used to study thermal radiation
Scientific Instruments Collection<br />Electrical Engineering Instr. #8<br /><br />*Need to verify types of tubes by observation; one is a GE (Molybdenum?)Kenotron Coolidge tube; the other may be a cold cathode tube; take separate photos - may need to create separate entry for cold cathode tube
Scientific Instruments Collection<br />Electrical Engineering Instr. #10<br /><br />cylindrical tube encased in glass at upper portion, making inner parts visible; black bottom portion and metal prongs protrude from bottom where it looks like you can "plug" it into something; per label previously displayed by Electrical Engineering Dept: "The purpose of the camera tube is to transform an image into an electrical signal. The camera tube is also known as a 'cathode ray tube' - meaning it is a vacuum tube that uses a focused beam of electrons"
Scientific Instruments Collection<br />Electrical Engineering Instr. #5<br /><br />replica of the original light bulb invented by Edison in 1879: clear glass, spherical bulb with small, pointed peak at apex; mounted on a wooden base with two metal screws at lowest part of base; the bulb, or "lamp" as it was called at the time, is much larger than a typical, modern light bulb; framed patent drawing, as well as a folder of related documents collected by the donor, are in the vertical file folder
Scientific Instruments Collection<br />Electrical Engineering Instr. #6<br />*very fragile wires - move bulbs very carefully if you must!<br />two teardrop-shaped, clear glass bulbs, each with a small pointed peak at apex of bulb; threaded metal base of bulb screws into the ceramic base; invented by Lewis Latimer, an African American inventor who was a member of Edison's research team; he sold the patent in 1881; these were phased out in 1904 by GE’s tungsten filament lamp - see remarks for more info
The thesis aims to build upon the Solow growth model to find the reasons behind Singapore’s rapid economic growth and transformation from 1965 to 2021. The basic Solow Growth model factors capital and labor force as the inputs for economic growth. However, the assumptions of the Solow Growth Model are too narrow as there are other factors behind a country’s economic growth. Existing literature on Singapore’s economic growth has showcased the various factors behind Singapore’s economic growth. Human capital, technology, trade,
FDI(Foreign Direct Investment), governance and leadership, political stability, location, culture, and geopolitics have major roles in Singapore’s economic growth and the Singaporean economy. These determinants can be cataloged into qualitative factors and quantitative factors. Hence, the thesis will take two different approaches. First, it will provide an empirical framework, a regression model, to measure the effects of the determinants such as physical capital, labor, human capital, and FDI on real GDP growth, through the extension of the Solow Growth Model. Second, the thesis will provide a qualitative assessment of the determinants through a case study as Singapore’s statehood and economic development were historically unprecedented. The results indicate that physical capital, labor, trade openness, FDI, and HCI have a significant impact on Singapore’s GDP growth. Moreover, the case study showcased that financialization, manufacturing, governance & leadership, technology, politics, geographic location, history, and culture were all determinants of Singapore’s economic growth from 1965 to 2021.
gray toned sky with hazy, misty appearance; in foreground, two jockeys on horses leaving track on left-hand side of the composition; two figures walking away from viewer; near middle center two large trees to their right
certificate of Institution of Civil Engineers granted to Edwin Wilbur Rice, Jr. on December 7th, 1897; former trustee of UC and received an honorary HO; considered one of the three founders of General Electric
