Using Calendar
I don’t know why people still don’t use calendar well today. Arranging meeting in regular emails, reschedule and cancel in emails as well. The efficiency is very low.
Just use the calendar function at your platform, for God’s sake!
波粒二象性
對如何描述波粒二象性有了個主意 。比如光子，它就是粒子，但具有波動特徵。但它本身不是波—至少不是機械波 。我覺得把它看成粒子比較好 ，至少光電效應表明，光攜帶能量的方式絕對不是波 。
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