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0633*Ҝེ࠱࠴ੴቖಙੴ
௲ػόᔈ၀ѝࢂນᏢғ่݀Ǵ׳ᔈ၀ၲࣽᏢᆒઓ܈ࢂࣽᏢЎϯǶΓޑ ᒍنᅟዛٗሶϿ܈ࢂύ୯ࣁՖؒԖࣽᏢࢂঁࣽᏢ௲ػǵࣽᏢণᏢޑԴୢᚒǶ ךॺғࢲύ٠ؒԖȨໆϯȩޑࣽᏢᆒઓǴࣗԿࢂ܌ᒏȨ௲ࣽᏢȩޑࣽᏢፐҁ ΨؒԖࣽᏢᆒઓǶӣډύᏢނޑڂୢᚒǴчъౚޑহϺࢂᇻВᗺǴоϺࢂ߈ ВᗺǴՠࢂࣁՖ߈ВᗺόࢂহϺǴᇻВᗺόࢂоϺګǻךॺޑเਢࢂӢࣁຯᚆӧ হϺᆶоϺޑৡ౦όεǴՠࢂহϺࢂޔǴоϺࢂ௹Ƕՠࢂ೭ࢤ၉Ǵѝࢂཷۺ
܄ޑ௶ॊǴѝࢂஒ่݀ȨޕȩᏢғ ǴךதᇥǺȨଯύނᆉόрٰǴ൩ၟؒᖱ
ኬȩǶຯᚆޑৡ౦ёаவᐍ༝ॉၰளǴѝࢂޔᆶ௹ޑૈໆॹۭৡ൳७ǻ ךΑຼޑਔ໔Ǵ၂ीᆉ(ฅΨதᆉᒱǴך࡛ሶޕၰךᆉᒱΑګǻ೭൩ࢂ
ှ،ୢᚒޑಞᄍǴךҔ٤ٯѐᔠᡍ)Ǵၟεৎϩ٦Π่݀Ƕ.
ଯύނ࣬ᜢޑҽǴ൩ࢂӧྣࡋύගډޑȨਟդᎩ۰ۓࡓȩ(Lambert's cosine law)ǺΕӀᆶྣᡏ߄य़όࠟޔǴ߾ྣࡋࣁ cosθ
r
I= E2 Ƕ ځύǴ ࣁΕفǶ
' cos ' cos
' cos
' cos
A A A A
E E
I I
A A θ
θ θ θ
= =
= = =
ଷӦౚъ৩ࣁ 1Ƕ
ӢԜӦౚԾᙯື௹ 23.5 ࡋǴࡺӦౚԾᙯືޑӛໆࣁ(1×sin23.5 ×cosɮ Ǵ 1×sin23.5ɮ×sin Ǵ1×cos23.5 )ɮ Ƕ ࢂԾᙯືӛໆቹӧ xy ѳय़ϐӛໆᆶ x
ື҅ӛϐ֨ف(ᜪ՟ࡋ)Ƕ
y z
23.5ɮ
x
ȧ