33,387 research outputs found
Radio observations of comets
Three general techniques of radio science used to attempt to observe comets are discussed: spectral line, continum and radar observations. Of these, only radio spectral line observations achieved a degree of success but, more often than not, the results was negative. Cometary excitation and reasons why radio searches can fail were examined
Radio detections of cometary molecular transitions: A review
Radio detections of CH, OH, HCN, CH3CN, and several unidentified species in comet Kohoutek and the detection of H2O emission from comet Bradfield are discussed in terms of the similarities and differences between cometary molecules and interstellar molecules. Emphasis is placed on excitation and chemistry. The observed projected densities and resulting gas production rates are considered along with the feasibility of future radio molecular observations of comets
Coulomb entangler and entanglement testing network for waveguide qubits
We present a small network for the testing of the entanglement of two
ballistic electron waveguide qubits. The network produces different output
conditional on the presence or absence of entanglement. The structure of the
network allows for the determination of successful entanglement operations
through the measurement of the output of a single qubit. We also present a
simple model of a dynamic coulomb-like interaction and use it to describe some
characteristics of a proposed scheme for the entanglement of qubits in
ballistic electron waveguides.Comment: 12 pages of text plus 7 figures: total 19 page
Tool for installing or extracting small bulbs in limited-access spaces
Installing and extracting component of tool is plastic tubing with inside diameter which provides snug fit over bulb. Other components, which provide sturdiness and ease of operation, consist of metal tube, with collar near one end, and plunger, with knob on one end and Teflon tip on the other
Experimental study of the impedance of a short dipole in a plasma for parallel and perpendicular orientation with respect to the dc magnetic field
Impedance measurements on small dipole immersed in anisotropic plasma with external electric fiel
Calibration of averaging total pressure flight wake rake and natural-laminar-flow airfoil drag certification
An averaging total pressure wake rake used by the Cessna Aircraft Company in flight tests of a modified 210 airplane with a laminar flow wing was calibrated in wind tunnel tests against a five-tube pressure probe. The model generating the wake was a full-scale model of the Cessna airplane wing. Indications of drag trends were the same for both instruments
- …