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Message: <blockquote data-quote="Pbartender" data-source="post: 2811501" data-attributes="member: 7533">Having a great time with my kids over two and half weeks of Holiday vacation.   <img src="https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f600.png" class="smilie smilie--emoji" loading="lazy" width="64" height="64" alt=":D" title="Big grin    :D"  data-smilie="8"data-shortname=":D" /> Sorry guys.  You want it, you got it.  I'll be right back with a lengthier post, but first let me address this...No, normally they are not.The cooling systems for lasers may be loud or the power systems for the lasers may be loud (especially if you are using a large bank of capacitors for a pulsed laser), but the laser itself very rarely makes any noise.A pulsed laser might make a noise ranging anywhere from a faint tick to a dull thud when its capacitors discharge, depending on how big the caps are, and how much power you're discharging.  That noise is the sound of metal components inthe power supply quickly expanding and contracting as they heat up and cool down with the sudden pulse of electricity.The material the laser beam hits might make a noise -- sizzling, crackling, a pop, or any other noise, depending on the amterial -- as it burns, melts or boils.Theoretically, a powerful enough laser beam could make a cracking noise much like a lightning bolt, as it super-heats the moisture in the air it travels through.In general, though, your average laser is pretty quiet.</blockquote>

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