Recent content by haiha

I am reading the manuals of an electronics measuring instrument, in which the term 'float' is repeated several times. Can anyone explain this term? Thanks in advance.

Hi all, I am writing an M-file to solve my non-linear equation system. Finally it works, but the problem is sometimes it takes about 20 seconds for a solution, sometimes the computer is just suspended. Even when I run the 1st time, it's ok, then rerun (same parameters), it gets stuck. Can...

We shoul calculate for all the time, not for any period of time. As I know, an average year's lengh for all time is 365.2425 days. An ordinary year consists of 365 days, a leap has 366. Now let n the the number of ordinary years corresponding to one leap year. We have the following equation...

So it doesn't have anything to do with the tilt of the moon orbit againt the Earth orbit around the sun?

Hi all, I've just read that the last full moon (29/6) was noted as the moon was lowest in the year. So there can be the full-moon when the moon can be the highest. Is that around Sep23 (equinox) or Dec22 (solstice)? Thanks.

This is a nice problem. I have not solved it out, but can see your solution being wrong. Consider the first experiment is a success then we start to count. The probability of discontinuity in the first 10 second is (9/10)^3 = 0.729. And the probability of discontinuity until second 60 will be...

Hi DH, I disagree when you say "..a strict ordering on balls a,b,c can be assigned". Say a>b, then you weigh a versus c, and a>c, but you do not know b>c or c>b.

1. This question is too large to answer. In short it depends on charges, size, shape, etc... 2. Look in the periodic table, the noble gas with highest molecular weight will have the highest melting point, which is radon. Noble gases' atomic attraction forces depend only on their radii

Hi Matt, I still can not get your idea in the last case (too bad isn't it): " B then L and B then R are similar. This leaves L,R (and R,L is again dual). But here you must have swapped over 1,4 L,R means b=4 c=1 weigh off a,d to finish" I also have thought of this but can not...

Hi all, I just know the Fourier series can be applied in differential equation solving, and that's all. Can anyone tell me the physical meaning of the Fourier transform, and fast Fourier transform too. Thank you very much.

You know the geometric volume of the balloon. You know the pressure, the temp. Apply the real gas law formula: P1V1/T1 = PoVo/To

Just a litle bit. The LED then turns out to be orange, not green as it used to be. It seems like 'SOS' signal.

Thank for your reply. Anyway, there's one thing I am not so sure. There exist two unvailed situations :If you take off the 4 (from the left, the heavier), then there can be an equality : 3=2+1, and if you take off the 2, there can be another equality 4=3+1. Then you can not decide when the ball...

Thanks Chroot. Anyway, I ve been using like this for more than 1 week, with the bat LED blinking all the time. May be I have to blindfold the LED.

Could you please give us the pass for RAR as well. Thank you.