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What is the percentage of photosynthetically active radiation (PAR) inthe incident solar radiation?(a) $100 \%$(b) $50 \%$(c) $1-5 \%$(d) $2-10 \%$
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Photosynthetically active radiation refers to the portion of the light spectrum that plants use to perform photosynthesis. Show more…
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PAR (Photosynthetically active radiation) from incident solar radiation is (a) $50 \%$ (b) $30 \%$ (c) $70 \%$ (d) $20 \%$
The intensity of solar radiation at the top of the Earth's atmosphere is 1370 $\mathrm{W} / \mathrm{m}^{2}$ . Assuming that 60$\%$ of the incoming solar energy reaches the Earth's surface and you absorb 50$\%$ of the incident energy, make an order-of-magnitude estimate of the amount of solar energy you absorb in a $60-\mathrm{min}$ sunbath.
The intensity of solar radiation at the top of the Earth's atmosphere is $1340 \mathrm{~W} / \mathrm{m}^{2}$. Assuming that $60 \%$ of the incoming solar energy reaches the Earth's surface and assuming that you absorb $50 \%$ of the incident energy, make an order-of-magnitude estimate of the amount of solar cnergy you absorb in a 60 -min sunbath.
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