Rotating coherent laser beam

if a coherent laser beam rotates about axis normal to laser beam . at very high angular frequency
can a light dot with radiant glow (of short radius) be obtained (at axis of rotation)due to persistence of vision ?
can this be used in holographic projector?

If the laser is aimed directly at your eye, you can see it. If it illuminates an object (wall, floor, chair, person) then you will see a line drawn across the surface of the object. If it illuminates smoke or fog, you will see a plane or surface cut through the smoke.

Holograms are not made this way.

The dot which you would see is usually reflected light, not radiant glow. That it is never illuminating more than one point at a time in sequence makes it definitely not-hologram.

Holograms are something else entirely. Try going to your nearest university library and look for "Optics" by Hecht&Zajak.

ad2049q:
The dot which you would see is usually reflected light, not radiant glow. That it is never illuminating more than one point at a time in sequence makes it definitely not-hologram.

Holograms are something else entirely. Try going to your nearest university library and look for "Optics" by Hecht&Zajak.

My textbook was Practical Holography by Graham Saxby. Plenty of theory, as well as exercises using your laser and optics to make holograms.

What has this got to do with an Arduino?

This and your other posts in the last few days seem to indicate a total lack of understanding of the fundamentals of physics.

Grumpy_Mike:
What has this got to do with an Arduino?

This and your other posts in the last few days seem to indicate a total lack of understanding of the fundamentals of physics.

And a lot of other things.

Right... SumitAich is clearly a troll. We should all agree to stop responding to any of his posts. Just report them to the moderators. The account should be banned/deleted.

PaulRB:
Right... SumitAich is clearly a troll. We should all agree to stop responding to any of his posts. Just report them to the moderators. The account should be banned/deleted.

Banned seems kinda harsh, but this non-Arduino thread should at least be moved to Bar Sport.