Diffractions

[franz32]

Is it possible that a fabric can be used as a diffraction grating where in the space between strands of threads is a small fraction of a millimeter?

My answer is yes. does it mean that the light can be bended due to this? I mean how come?

[Gokul43201]

My answer is yes You are right.

does it mean that the light can be bended due to this? I mean how come?
In the exact same way that a diffraction grating (transmission) does. As long as the spacing is of order a micron, you will have noticeable diffraction in the visible range.

[franz32]

One more thing... How is it possible for those "sound waves" be heard by a person even if he's in a different house... I mean, yup, by diffraction, one can hear your neighbor shouting at your house? How would that sound travel.. in order to hear it?