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<div style=3D"font-family:Calibri,Arial,Helvetica,sans-serif; font --0000000000009fefec05a45de037 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable http://www.skepdic.com/rods.html It is an optical illusion according to this website: But, according to Doug Yanega of the Entomology Department at the University of California at Riverside and a member of the Straight Dope Science Advisory Board, rods are a videographic artifact based on the frame capture rate of the videocam versus the wingbeat frequency of the insects. Essentially what you see is several wingbeat cycles of the insect on each frame of the video, creating the illusion of a "rod" with bulges along its length. The blurred body of the insect as it moves forward forms the "rod," and the oscillation of the wings up and down form the bulges. Anyone with a video camera can duplicate the effect, if you shoot enough footage of flying insects from the right distance.* <http://www.straightdope.com/mailbag/mrodhoax.html> On Tue, Apr 28, 2020 at 3:12 PM Andrew Stadnyk <Andrew.Stadnyk@dal.ca> wrote: > Certainly not a video scam from me, right-off the trail cam. There is > shape to it, just pause the video and catch it at near the apex. In terms > of my video editing capabilities, heck it took me weeks to figure out how > to get it on Twitter (cost free, that is, I was sharing 92Mb through Goog= le > before). That's why it was so striking. So UFO it is until we know more b= ut > I haven't seen a repeat. > > Andy Stadnyk > > ------------------------------ > *From:* naturens-owner@chebucto.ns.ca <naturens-owner@chebucto.ns.ca> on > behalf of Stephen Shaw <srshaw@Dal.Ca> > *Sent:* April 28, 2020 2:54 PM > *To:* naturens@chebucto.ns.ca <naturens@chebucto.ns.ca> > *Subject:* Re: [NatureNS] Re: peculiar arthropod capture > > Agreed. But it=E2=80=99s not the obvious LED pointer trail that cats lov= e, > though: that wouldn=E2=80=99t leave a trace in plain air and doesn=E2=80= =99t leave one on > the ground in the video. At two points the bouncing image changes > direction very rapidly in an un-animal-like manner, so it does appear to = be > human-made. First guess is that somebody with video skills has > superimposed another image on top of the cat pic, and that it=E2=80=99s a= scam. > Second guess is that it=E2=80=99s a miniature UFO. > > On Apr 28, 2020, at 8:43 AM, David Webster <dwebster@glinx.com> wrote: > > Dear Andrew and All, > > I had a look at this. That must be some rotating light source nearby or > some kid having fun. Not a leaping arthropod. > > yt, DW, Kentville. > On 4/28/2020 8:16 AM, Andrew Stadnyk wrote: > > Indirectly related to the cats in our yard, in January I happened to > capture video of a very peculiar arthropod (jumping Centipede?) bouncing = in > the dark in front of a stray cat, from our deck. The cat notices it but > likely can't see it. I am very interested in more information about the > arthropod. Fascinating that it is bouncing and in January. Any ideas are > appreciated. > > The video is available on Twitter, using the link. You don't have to be > subscriber to Twitter to see it. > > https://twitter.com/I_stop_forbirds/status/1254015664790147072 > > Andy Stadnyk > Lower Sackville > > > > > --0000000000009fefec05a45de037 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable <div><div><a href=3D"http://www.skepdic.com/rods.html">http://www.skepdic.c= om/rods.html</a>=C2=A0</div><div dir=3D"auto"><br></div><div dir=3D"auto">I= t is an optical illusion according to this website:</div><div dir=3D"auto">= <p style=3D"margin:20px 0px;padding:0px;color:rgb(51,51,51);font-family:Ari= al,Helvetica,sans-serif"><font face=3D"Arial" size=3D"3" style=3D"margin:0p= x;padding:0px"><br></font></p><p style=3D"margin:20px 0px;padding:0px;color= :rgb(51,51,51);font-family:Arial,Helvetica,sans-serif"><font face=3D"Arial"= size=3D"3" style=3D"margin:0px;padding:0px">=C2=A0But, according to Doug Y= anega of the Entomology Department at the University of California at River= side and a member of the Straight Dope Science Advisory Board, rods are=C2= =A0</font></p><blockquote style=3D"margin:0px auto;padding:0px 0px 0px 10px= ;font-family:Arial,Helvetica,sans-serif;width:376px;color:rgb(51,51,51)"><p= style=3D"margin:20px 0px;padding:0px"><font face=3D"Arial" size=3D"3" styl= e=3D"margin:0px;padding:0px">a videographic artifact based on the frame cap= ture rate of the videocam versus the wingbeat frequency of the insects. Ess= entially what you see is several wingbeat cycles of the insect on each fram= e of the video, creating the illusion of a "rod" with bulges alon= g its length. The blurred body of the insect as it moves forward forms the = "rod," and the oscillation of the wings up and down form the bulg= es. Anyone with a video camera can duplicate the effect, if you shoot enoug= h footage of flying insects from the right distance.<font color=3D"#990000"= style=3D"margin:0px;padding:0px"><a href=3D"http://www.straightdope.com/ma= ilbag/mrodhoax.html" style=3D"margin:0px;padding:0px;color:rgb(51,153,204);= text-decoration:none">*</a></font></font></p></blockquote></div><div dir=3D= "auto"><br></div><div dir=3D"auto"><br></div><div dir=3D"auto"><br></div><b= r></div><div><br><div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail= _attr">On Tue, Apr 28, 2020 at 3:12 PM Andrew Stadnyk <<a href=3D"mailto= :Andrew.Stadnyk@dal.ca">Andrew.Stadnyk@dal.ca</a>> wrote:<br></div><bloc= kquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #cc= c solid;padding-left:1ex"> <div dir=3D"ltr"> <div style=3D"font-family:Calibri,Arial,Helvetica,sans-serif;font-size:12pt= ;color:rgb(0,0,0)"> Certainly not a video scam from me, right-off the trail cam. There is shape= to it, just pause the video and catch it at near the apex. In terms of my = video editing capabilities, heck it took me weeks to figure out how to get = it on Twitter (cost free, that is, I was sharing 92Mb through Google before). That's why it was so striki= ng. So UFO it is until we know more but I haven't seen a repeat.</div> <div style=3D"font-family:Calibri,Arial,Helvetica,sans-serif;font-size:12pt= ;color:rgb(0,0,0)"> <br> </div> <div style=3D"font-family:Calibri,Arial,Helvetica,sans-serif;font-size:12pt= ;color:rgb(0,0,0)"> Andy Stadnyk</div> <div> <div id=3D"m_24827562168620032appendonse