【简答题】The 3rd, 6th, 9th maxima are missing in a grating experiment, and the grating constant d=7200nm. What is the minimum possible value of slit width a?a = ________nm
【简答题】“The maximum possible value for the PHF is ( ),which occurs when the volume in each interval is constant. The minimum value occurs when the entire hourly volume occurs in a single 15-minute interval. ...