§10.6 Photochemistry 6.6 The way to harness solar energy All the energy on the global surface comes from the sun The total solar energy reached the global surface is 3 x 1024J'y-l, is 10,000 times larger than that consumed by human being 新闻中心国内斯闻 Only 1-2% of the total incident energy 中国玉米亩均单产提高至1227公斤 is recovered for a field of corn 2014年11月21日16:18新华网 21 新华网北京11月21日电者林青、王宇农业部近日组织专家验收,中国农科院作物科 学研究所在新疆生产建设兵团第四师71团万亩玉米示范田实现亩均单产1227.6公斤的新纪录 较2012年创造的11134公斤/亩的全国大面积高产纪录又提高了100多公斤
All the energy on the global surface comes from the sun. The total solar energy reached the global surface is 3 1024 Jy -1 , is 10,000 times larger than that consumed by human being. 6.6 The way to harness solar energy Only 1~2% of the total incident energy is recovered for a field of corn. §10. 6 Photochemistry
§10.6 Photochemistry 6.6 The way to harness solar energy ⑧ Solar-> heating: Solar- >electricity: photovoltaic cell Solar->chemical energ. Photolysis of water photoelectrochemical cell
Solar ⎯→ heating: 6.6 The way to harness solar energy §10. 6 Photochemistry Solar ⎯→ electricity: photovoltaic cell Solar ⎯→ chemical energy photoelectrochemical cell Photolysis of water