scholarly journals The concept of effective wave length, and the use of wide-band photometric systems.

1951 ◽  
Vol 56 ◽  
pp. 132
Author(s):  
Ivan King
Keyword(s):  
Wave Length ◽  
Wide Band ◽  
Effective Wave

The Effective Wave-length of γ Rays

Nature ◽  
1925 ◽  
Vol 116 (2910) ◽  
pp. 206-207 ◽  
Author(s):  
D. SKOBELTZYN
Keyword(s):  
Wave Length ◽  
Γ Rays ◽  
Effective Wave

Light Requirement of the Diphenylether Herbicide Oxyfluorfen

Weed Science ◽  
1979 ◽  
Vol 27 (1) ◽  
pp. 88-91 ◽  
Author(s):  
D. E. Vanstone ◽  
E. H. Stobbe
Keyword(s):  
Absorption Spectrum ◽  
Light Intensity ◽  
Chlorophyll Content ◽  
Wave Length ◽  
Membrane Integrity ◽  
Preliminary Evidence ◽  
Herbicidal Activity ◽  
Fagopyrum Esculentum ◽  
Light Requirement ◽  
Effective Wave

Herbicidal activity of foliar-applied oxyfluorfen [2-chloro-1-(3-ethoxy-4-nitrophenoxy)-4-(trifluoromethyl)benzene] was light dependent in buckwheat (Fagopyrum esculentumMoench. ‘Tokyo’). Plants were not injured when placed in the dark for as long as 4 days after herbicide treatment. When these plants were brought to the light, injury occurred, albeit more slowly than when plants were placed in the light immediately after treatment. The rate of injury increased as light intensity increased. The most effective wave length was 565 to 615ηm, suggesting the involvement of a pigment with its absorption spectrum in this region. Chlorophyll content was not reduced by oxyfluorfen. Preliminary evidence suggests that photosynthesis was affected only after membrane integrity was disrupted.

scholarly journals Compact ultra-wide band microwave filter utilizing quarter-wave length short-circuited stubs with reduced number of vias

2009 ◽  
Vol 51 (9) ◽  
pp. 2116-2119 ◽  
Author(s):  
Mohammad Shahrazel Razalli ◽  
Alyani Ismail ◽  
Mohd Adzir Mahdi ◽  
Mohd Nizar Hamidon
Keyword(s):  
Wave Length ◽  
Wide Band ◽  
Ultra Wide Band ◽  
Microwave Filter ◽  
Quarter Wave

scholarly journals Absorption of radium (B+C) gamma-rays

1945 ◽  
Vol 183 (994) ◽  
pp. 338-355 ◽  
Keyword(s):  
Gamma Rays ◽  
Electron Pair ◽  
Gamma Ray ◽  
Wave Length ◽  
Photoelectric Effect ◽  
Pair Formation ◽  
Photoelectric Absorption ◽  
Absorption Coefficients ◽  
Length Range ◽  
Effective Wave

New measurements of the absorption of filtered gamma-rays from radium (B + C) in aluminium, carbon and lead have been made. A small condenser type of ionization chamber has been used, which overcomes many of the difficulties usually inherent in this kind of measurement. Detailed consideration has been given to the corrections which must be applied to ionization measurements before absorption coefficients can be calculated. From the most recent theories of absolution by scattering, photoelectric effect, and electron pair formation, total absorption coefficients for lead over the wave-length range concerned have been calculated. The problem of the effective wave-length of a filtered heterogeneous gamma-ray beam is discussed in some detail, and a proposed method of estimation put forward. Comparison of the calculations of µ / ρ with the experimental figures indicates that the photoelectric absorption rises more rapidly with increasing wave-length than is predicted by theory.

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