145,574 research outputs found
Curtis L. Drake Interview, 30 July 2014
No full textCurtis L. Drake is a deacon at Union Grove Missionary Baptist Church. He has been a member since 1959 and met his wife at the church. He first moved to the Central neighborhood from Alabama with his family and has been here ever since
Curtis L. Drake Interview, 30 July 2014
No full textCurtis L. Drake is a deacon at Union Grove Missionary Baptist Church. He has been a member since 1959 and met his wife at the church. He first moved to the Central neighborhood from Alabama with his family and has been here ever since
Curtis Farm Stand
No full textL-R: Fran Morales, Dulcie (Dulcelina) Curtis and Emile LePlat standing in front of Curtis Farm Stand; boxes of produce in front, chile ristras hangin
Curtis Type Non-Inductive Resistors
No full textIn response to a need for increasing precision in alternating current research, researchers at the National Bureau of Standards (NBS) undertook an investigation into the behavior of resistance coils when subjected to alternating current voltage. Many commercial resistance coils performed well with direct currents, but could not measure alternating currents satisfactorily. Several NBS staff members were pioneers in developing special windings in which the turns were frequently reversed in direction to minimize inductance or capacitance in resistors used on alternating current. Later, manufacturers developed looms for weaving such resistors.
These two resistors, developed circa 1912 by Harvey L. Curtis of NBS and each of 1,000 ohms, were wound on a split cylindrical form so that the successive turns led the current around the form in opposite directions. The magnetic effects of the current were thus minimized, its inductance reduced to +30 microhenrys, while the difference of potential between adjacent turns, and hence the effective capacitance, was much smaller than in the more common bifilar winding.[H] 23 cm [W] 10.5 cm [L] 11.5 c
Pressure Gauge for Naval Ordnance
No full textThis pressure gauge, designed by Harvey L. Curtis of the National Bureau of Standards, is an adaptation made during World War II for use on 3-inch gun. The gauge was originally used on 14-inch guns in World War I. During World War II, a group of National Bureau of Standards and Geophysical Laboratory scientists, under the direction of Harvey L. Curtis, worked at the David Taylor Model Basin, Carderock, Maryland, on the ballistics of 3-inch and 90-millimeter guns. This was a modernized continuation of earlier studies (see 1998.0071.001 and 1998.0077.001). See also 1998.0070.001, 1998.0073.001, 1998.0074.001, 1998.0076.001, and 1998.0077.001.[H] 18 cm [Diam] 8 cm [L] 14 c
July 9, 2017: Weekly Message from Interim President Curtis McCray
No full textPresident Curtis L. McCray reflects on the past and future of Wright State University. He focuses on the positive influences and values at Wright State. He continues to on to discuss the hope he has for the community
Pressure Gauge for Naval Ordnance
No full textThis is a pressure gauge for Naval Ordnance designed by Harvey L. Curtis of the National Bureau of Standards. Applying increased pressure to this device expanded its core elastically, stretched the wire and increased its resistance. This object is similar to another pressure gauge in the collection (1998.0073.001), but the sensing resistor is wound tightly on a hollow core. During World War II, a group of National Bureau of Standards and Geophysical Laboratory scientists, under the direction of Harvey L. Curtis, worked at the David Taylor Model Basin, Carderock, Maryland, on the ballistics of 3-inch and 90-millimeter guns. This was a modernized continuation of earlier studies (see 1998.0071.001 and 1998.0077.001). See also 1998.0070.001, 1998.0073.001, 1998.0075.001, and 1998.0076.001.[H] 5.5 cm [Diam] 3.5 cm11
Pressure Gauge for Naval Ordnance
No full textThis is a pressure gauge for Naval Ordnance designed by Harvey L. Curtis of the National Bureau of Standards. This object is similar to another pressure gauge in the collection (1998.0074.001), but the sensing resistance wires are cemented longitudinally on the surface of the solid core and decrease in resistance as the core is shortened elastically by the force exerted on its end. During World War II, a group of National Bureau of Standards and Geophysical Laboratory scientists, under the direction of Harvey L. Curtis, worked at the David Taylor Model Basin, Carderock, Maryland, on the ballistics of 3-inch and 90-millimeter guns. This was a modernized continuation of earlier studies (see 1998.0071.001 and 1998.0077.001). See also 1998.0070.001, 1998.0074.001, 1998.0075.001, and 1998.0076.001.[H] 4 cm [W] 10.5 cm [D] 4.5 c
President Curtis L. McCray
No full textPortrait of President Curtis L. McCrayhttps://digitalcommons.unf.edu/unf_pres/1017/thumbnail.jp
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