[acecharly (OP)]

After taking a bath the other day I watched the water going down the spout (as you do  ) and i noticed something ive neve seen before. Aside fom the usual spiraling effect as the water flowed downed the spout the ceiling light created shadows of approximately 10-15 perfectly straight lines radiating out from the spiraling water.

Any ideas what this is and is this similar to how stars that orbit a galaxy rotate similar on the outside as they do close to the center unlike how our planets orbit our sun at longer durations depending how far out they are?

[RD]

... the ceiling light created shadows of approximately 10-15 perfectly straight lines radiating out from the spiraling water.

an interference effect of water waves (ripples) can cause what appears to be radial shadows ...


https://en.wikipedia.org/wiki/Ripple_tank

[acecharly (OP)]

Ahhhh ....Brilliant...!!!! never thought of that, great answer, finally ive observed my very own interference pattern.