Recent content by timlee

Thanks! Where to get some basic sense of how much the rate for the compressor is?

Manufactured in 1998. Believed to have been used most of time since. Given by my landlord. I was also wondering what the refrigerator's power should be like after being used for 12 years, and if the amount 766 kWh/year shown at energystar website has taken into account the age of the...

Hi, I have a refrigerator (model No FRT18SJGW1) which consists of a freezer compartment on the top and a bigger frige compartment below. It is operating 24 hours a day and 365 days a year. There is a label in its fridge compartment saying: Electrial ratings: Amps 4.75, Volts 115, Hertz...

Thanks, Claude. Does transmission include scattering and refraction?

Thanks! In my original post, I actually wanted to ask the difference of those concepts, especially scattering and transmission with other concepts. So if anyone can help me to clarify these concepts, I would really appreciate it.

When a wave is passing medium containing discontinuities, I learned from Wiki, scattering means changing the direction from a straight trajectory, so does it include refraction, transmission and reflection? Does transmission means the part of wave that has passed the interface, and therefore...

Thank you!

Thanks! Two questions: in terms of cause and result, does the change in velocity cause the change in wavelength, or the reverse, or they are not directly of cause and result relation? Is the conclusion same for other types of wave (general waves, not only light or electromagnetic field)...

Hi, As we know, "velocity = wavelength * frequency" and light will change its speed when it passes different types of medium. I wonder in velocity, wavelength and frequency, which one's change cause the others changing? Does its frequency change in different types of medium? or its wavelength...

Hi, In the context of signal processing, I am curious about what's the relation and difference between system and filter? Are they the same? Thanks and regards!