Related to my previous question - Change in appearance of liquid drop due to gravity...
Ok, I think we all have noticed this practical phenomena (a kind of illusion though)... During rain (while we're at rest), rain drops would definitely fall in the form of somewhat perfect vertical lines (assuming there's no wind). And When we're in motion, those "lines of rain" would be inclined to some $\theta$. That inclination depends on our velocity (what our eyes perceive at our speed). A friend of mine drove his car to some 120 km/h. Unfortunately, I didn't observe any horizontal line.
So, Is there any way we could observe "rain lines" horizontal..? What would be the velocity required for it? I think we don't have to break any barriers for that perception :-)
I googled it. But, I can't find anything regarding lines. Any explanation or perhaps a link would be good.
(As the climate would be rainy for atleast 2 months, I could test it in some grounds)