The weather is strange today. I went to Verve then my order is forgot by staff however, they are so kind because they provided me free ticket for a drink can use next time. Next, I went to Trader Joe's for first time. When I back to home, …

I had a wonderful time today because I studied statics, writing section at TOEFL, GMAT, and radiative process in astrophysics. But, I could not understand why does the radiation pressure multiply by a cosine. I think that the problem is no…