Results 271 to 280 of about 15,654,964 (316)
Some of the next articles are maybe not open access.
Applied Optics, 1976
High power laser beams propagating in the atmosphere are subjected to a variety of effects, the most important of which are absorption, scattering, turbulence induced beam spreading and wander, thermal blooming, and gas breakdown. In this paper simplified models are used to show how the various atmospheric effects interrelate and impact on the best ...
openaire +2 more sources
High power laser beams propagating in the atmosphere are subjected to a variety of effects, the most important of which are absorption, scattering, turbulence induced beam spreading and wander, thermal blooming, and gas breakdown. In this paper simplified models are used to show how the various atmospheric effects interrelate and impact on the best ...
openaire +2 more sources
High-powered magnets still require high-powered vigilance
Journal of Pediatric Surgery, 2022Ellen M. Encisco +2 more
openaire +2 more sources
A High Power Attenuator for Microwaves
Review of Scientific Instruments, 1949A high power variable attenuator has been developed for use in 10-cm wave guide transmission lines. The attenuating material is a liquid which serves also to transfer the absorbed energy. The attenuator can handle power levels up to 100 watts, has a power standing wave ratio less than 1.1 to 1, and an attenuation which is variable from 1.5 db to 40 db.
openaire +2 more sources
SPIE Proceedings, 1998
The discharge conditions of the multi-atmospheric e-beam sustained Ar-Xe laser are investigated. It is observed that the quasi-stationary period of a laser pulse depends on the e-beam current, the discharge power deposition and the gas density. The laser efficiency can be as high as 8%.
Witteman, W.J. +3 more
openaire +2 more sources
The discharge conditions of the multi-atmospheric e-beam sustained Ar-Xe laser are investigated. It is observed that the quasi-stationary period of a laser pulse depends on the e-beam current, the discharge power deposition and the gas density. The laser efficiency can be as high as 8%.
Witteman, W.J. +3 more
openaire +2 more sources
IEEE Transactions on Microwave Theory and Techniques, 1958
In order to obtain filters capable of handling very high power, the use of radial lines and uniform line discontinuities was investigated as the most promising approach. In this connection, it was necessary to consider equivalent circuit and interaction effects for H-mode radial line mated at each end to uniform TE 10 waveguide for taper angles of 45 ...
openaire +1 more source
In order to obtain filters capable of handling very high power, the use of radial lines and uniform line discontinuities was investigated as the most promising approach. In this connection, it was necessary to consider equivalent circuit and interaction effects for H-mode radial line mated at each end to uniform TE 10 waveguide for taper angles of 45 ...
openaire +1 more source
Electrical Engineering, 1936
A brief outline of the essential characteristics of high power audio transformers for class B amplification (tubes connected in push-pull fashion with their grid voltages of such value that the anode current is zero when there is no signal) is given here together with a brief description of the units used in the third and fourth stages of ...
openaire +1 more source
A brief outline of the essential characteristics of high power audio transformers for class B amplification (tubes connected in push-pull fashion with their grid voltages of such value that the anode current is zero when there is no signal) is given here together with a brief description of the units used in the third and fourth stages of ...
openaire +1 more source
Proceedings of the IEEE, 1994
After the classification and a short review of the evolution, the different drive systems which became important in industrial applications are described. It is shown how motor, converter, and controls form a drive system. The specific characteristics of each system are emphasized in order to show which system is best suited for which kind of ...
openaire +1 more source
After the classification and a short review of the evolution, the different drive systems which became important in industrial applications are described. It is shown how motor, converter, and controls form a drive system. The specific characteristics of each system are emphasized in order to show which system is best suited for which kind of ...
openaire +1 more source
Space Applications of High-Power Microwaves
IEEE Transactions on Plasma Science, 2007Schemes have been suggested for transferring energy from Earth-to-space, space-to-Earth, and space-to-space using high-power microwave (HPM) beams. All use power beaming. Microwave beams have been studied for propelling spacecraft for launch to orbit, orbit raising, launch from orbit into interplanetary and interstellar space, and deployment of large ...
openaire +1 more source
High-powered Money and the Monetary Base
1987The concept of high-powered money or a monetary base appears as an important term in any analysis addressing the determinants of a nation’s money stock in regimes exhibiting financial intermediation. Two types of money can be distinguished in such institutional contexts. One type only occurs as a ‘monetary liability’ of financial intermediaries.
openaire +1 more source
Wireless power transfer based on novel physical concepts
Nature Electronics, 2021Mingzhao Song +2 more
exaly