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<div dir="ltr" data-setdir="false">A laser would heat up the enclosed gas, wouldn't it? If enough sustained heat increase occurred, couldn't that induce the balloon to burst? </div><div dir="ltr" data-setdir="false"><br></div><div dir="ltr" data-setdir="false">-- Bob Primak </div><div dir="ltr" data-setdir="false"><br></div><div><br></div>
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On Wednesday, February 15, 2023 at 05:15:58 PM EST, Ted Kochanski <tedpkphd@gmail.com> wrote:
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<div><div id="ydp30a71424yiv2384172952"><div><div dir="ltr">All,<div><br clear="none"></div><div>The nice thing about an electrically powered laser -- if you miss -- just squeeze the trigger again [essentially each round is free] -- with the exception of burning some jet fuel you can keep shooting</div><div><br clear="none"></div><div>Ted</div></div><br clear="none"><div id="ydp30a71424yiv2384172952yqt27879" class="ydp30a71424yiv2384172952yqt2775488349"><div class="ydp30a71424yiv2384172952gmail_quote"><div dir="ltr" class="ydp30a71424yiv2384172952gmail_attr">On Wed, Feb 15, 2023 at 1:37 PM Stephen Parus <<a shape="rect" href="mailto:sparus@umich.edu" rel="nofollow" target="_blank">sparus@umich.edu</a>> wrote:<br clear="none"></div><blockquote style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex;" class="ydp30a71424yiv2384172952gmail_quote"><div><div dir="ltr"></div><div dir="ltr"><div style="display:block;"><div style="display:inline-block;"><a shape="rect" dir="ltr" style="border-radius: 10px; font-family: -apple-system, Helvetica, Arial, sans-serif; display: block; width: 300px; text-decoration: none;" href="https://theweek.com/us-military/1021008/why-the-us-used-missiles-not-cheap-bullets-to-shoot-down-chinese-balloon-3" rel="nofollow" target="_blank"><table style="table-layout:fixed;border-collapse:collapse;width:300px;background-color:rgb(233,233,235);font-family:-apple-system, Helvetica, Arial, sans-serif;" cellpadding="0" cellspacing="0" border="0" width="300"><tbody><tr><td align="center" colspan="1" rowspan="1"><img style="width: 300px; max-width: 467px;" alt="GettyImages-53380294.jpg" src="cid:Wfh7GmMv5GbTSDQLCbBH" class=""></td></tr><tr><td colspan="1" rowspan="1"><table bgcolor="#E9E9EB" cellpadding="0" cellspacing="0" width="300" style="font-family:-apple-system, Helvetica, Arial, sans-serif;table-layout:fixed;background-color:rgb(233,233,235);"><tbody><tr><td colspan="1" rowspan="1" style="padding:8px 0px;"><div style="max-width: 100%; margin: 0px 16px;"><div style="font-weight: 500; font-size: 12px; text-align: left;"><a shape="rect" href="https://theweek.com/us-military/1021008/why-the-us-used-missiles-not-cheap-bullets-to-shoot-down-chinese-balloon-3" style="text-decoration:none;" rel="nofollow" target="_blank"><font color="#000000" style="color:rgb(0,0,0);">Why the U.S. used missiles, not cheap bullets, to shoot down Chinese balloon, 3 unidentified objects</font></a></div><div style="font-weight: 400; font-size: 11px; text-align: left;"><a shape="rect" href="https://theweek.com/us-military/1021008/why-the-us-used-missiles-not-cheap-bullets-to-shoot-down-chinese-balloon-3" style="text-decoration:none;" rel="nofollow" target="_blank"><font color="#A2A2A9">theweek.com</font></a></div></div></td></tr></tbody></table></td></tr></tbody></table></a></div></div><br clear="none"></div><div dir="ltr">Steve</div><div dir="ltr"><br clear="none"><blockquote type="cite">On Feb 15, 2023, at 9:59 AM, Ted Kochanski <<a shape="rect" href="mailto:tedpkphd@gmail.com" rel="nofollow" target="_blank">tedpkphd@gmail.com</a>> wrote:<br clear="none"><br clear="none"></blockquote></div><blockquote type="cite"><div dir="ltr"><div dir="ltr">All,<div><br clear="none"></div><div>Its more complicated -- in a vacuum yes the spreading is easily predictable</div><div><br clear="none"></div><div>However in a gas with enough power the laser beam can essentially make a "virtual fiber optic" by the heating of the air in the core changing the index of refraction of the beam</div><div>If the power density is really high the air will "breakdown" and the core of the path will be ionized gas changing everything you heard about in grade school physics</div><div><br clear="none"></div><div>Ted</div><div><br clear="none"></div></div>(etc.) <br clear="none"><div class="ydp30a71424yiv2384172952gmail_quote"><div dir="ltr" class="ydp30a71424yiv2384172952gmail_attr"><br></div></div></div></blockquote></div></blockquote></div></div>
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