Please watch the video carefully and write your answer
Here is a riddle:
We have a 10 watt laser that is programmed with an Arudino for a minimum power (duty ratio) and frequency.
1Hz and 1 duty ratio.
When we aim the beam at an anodized plate – we can hear a sound.
When we turn it on a max power – there is no sound.
When we aim the beam at a cink steel on a min power – no sound.
The question: why does it happen?
The first comment explaining the phenomena with at least 1 equation describing the process will get a 10W laser.
If you do not know the answer but you bring the person who give the right answer – you will get 8.5 watt laser as a gift!
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A winner explanation
If you have more questions please email me [email protected]
(A new updated video about the sound spectrum)
The spectrum remains the same on all laser power.
The sound remains the same on all materials.