| Project/Area Number |
59860028
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| Research Category |
Grant-in-Aid for Developmental Scientific Research
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| Allocation Type | Single-year Grants |
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| Research Field |
農業気象・生物環境制御学
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| Research Institution | Tohoku University |
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Principal Investigator |
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| Project Period (FY) |
1984 – 1985
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| Project Status |
Completed (Fiscal Year 1985)
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| Budget Amount *help |
¥6,900,000 (Direct Cost: ¥6,900,000)
Fiscal Year 1985: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 1984: ¥6,300,000 (Direct Cost: ¥6,300,000)
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| Keywords | environment / photon / two pigment system / 二色素系 / 等価光量子数 |
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| Research Abstract |
To assess the effect of light on living organisms as an environmental factor, it is necessary to consider the relation between spectral component of the environmental light and absorption or action spectrum of the photoreceptive organ. The number of the indices for evaluation should be small, only one if possible. In this study we propose to use an index to characterize the environmental light. The principle is as follows.
1) The energy of each wavelength is measured from 300nm to 1,100nm.
2) The energy for each wavelength is converted into photon number.
3) The numbers of photon are weighed by relative absorption spectrum and all these weighed numbers are integrated.
This value is called "photon number equivalent to maxijmum wavelength". We designed and made an equipment to measure the energy of light and to calculate this index. Then the validity of the index was tested by different experiment. The result indicate the usefulness of the index for characterizing the environmental light.
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