Comments on: Contrail Gaps and other Questions http://contrailscience.com/contrail-gaps-and-other-questions/ The Science and Pseudoscience of Contrails and Chemtrails Sat, 04 Feb 2012 15:04:06 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: GregOrcahttp://contrailscience.com/contrail-gaps-and-other-questions/comment-page-2/#comment-115666 GregOrca Fri, 27 Jan 2012 10:24:08 +0000 http://contrailscience.com/contrail-gaps-and-other-questions/#comment-115666 "how can a shadow cause a gap?" You mean how can a shadow cause something viewed through many kilometres of atmosphere not to be visible? http://static.panoramio.com/photos/original/10206684.jpg Here is a picture of the moon viewed through earth's atmosphere. There appears to be a few trillion tons of dark rock MISSING. The large GAP on the side of the moon is because it is in shadow and rayleigh blue light scattering makes us just see blue when in reality there is brownish grey rock. The intensity of the scattered blue light from the rest of the atmosphere is greater than the tiny amount of light scattered from the section of contrail in shadow “how can a shadow cause a gap?”

You mean how can a shadow cause something viewed through many kilometres of atmosphere not to be visible?

http://static.panoramio.com/photos/original/10206684.jpg
Here is a picture of the moon viewed through earth’s atmosphere.

There appears to be a few trillion tons of dark rock MISSING.
The large GAP on the side of the moon is because it is in shadow and rayleigh blue light scattering makes us just see blue when in reality there is brownish grey rock.
The intensity of the scattered blue light from the rest of the atmosphere is greater than the tiny amount of light scattered from the section of contrail in shadow

]]> By: Alexeyhttp://contrailscience.com/contrail-gaps-and-other-questions/comment-page-2/#comment-115657 Alexey Fri, 27 Jan 2012 09:13:30 +0000 http://contrailscience.com/contrail-gaps-and-other-questions/#comment-115657 It is obviously a shadow. It does not cause a gap, merely a darken part of the contrail fades into background. The "gap" follows the plane with the same speed about 250 m/s, how else it would stay in exactly the same location relative the plane. Here is another example of shadow from the tail fin of Boeing E-3 Sentry in similar lighting conditions: http://consci.s3.amazonaws.com//wp-content/uploads/AWACS-1.jpg Compare it with a close up of the plane in your video at 0:33. It is obviously a shadow. It does not cause a gap, merely a darken part of the contrail fades into background. The “gap” follows the plane with the same speed about 250 m/s, how else it would stay in exactly the same location relative the plane.

Here is another example of shadow from the tail fin of Boeing E-3 Sentry in similar lighting conditions:

http://consci.s3.amazonaws.com//wp-content/uploads/AWACS-1.jpg

Compare it with a close up of the plane in your video at 0:33.

]]> By: JFDeehttp://contrailscience.com/contrail-gaps-and-other-questions/comment-page-2/#comment-115656 JFDee Fri, 27 Jan 2012 09:11:03 +0000 http://contrailscience.com/contrail-gaps-and-other-questions/#comment-115656 It <b>looks</b> like a gap. The contrail is just darkened and blends in with the background. Otherwise It is not affected. I can't imagine a better explanation. Even if we assume that this is not an ordinary contrail, the effect would be no different. It looks like a gap. The contrail is just darkened and blends in with the background. Otherwise It is not affected.
I can’t imagine a better explanation. Even if we assume that this is not an ordinary contrail, the effect would be no different.

]]> By: ChemtrailOrbshttp://contrailscience.com/contrail-gaps-and-other-questions/comment-page-2/#comment-115635 ChemtrailOrbs Fri, 27 Jan 2012 07:53:02 +0000 http://contrailscience.com/contrail-gaps-and-other-questions/#comment-115635 keyword being " shadow " Sine when has a shadow ever actually affected a contrail? ie cause a gap? how can a shadow cause a gap? keyword being ” shadow ”

Sine when has a shadow ever actually affected a contrail? ie cause a gap? how can a shadow cause a gap?

]]> By: JFDeehttp://contrailscience.com/contrail-gaps-and-other-questions/comment-page-2/#comment-115632 JFDee Fri, 27 Jan 2012 07:26:28 +0000 http://contrailscience.com/contrail-gaps-and-other-questions/#comment-115632 To me it looks like the shadow of the plane's tail unit (mainly fin and rudder), cast on the fresh contrail. Imagine the sun standing low over the horizon (morning or evening, the video doesn't say) in the direction the camera points to in the first close-up; it's <b>behind</b> the plane. The contrail further behind is fully illuminated, it seems to be almost glowing. But most parts of the plane itself are shadowed, except for the lower front of the fuselage. A cloud in the right place below the plane would have shown a shadow of the whole thing including the one cast by the contrail. The only part of the plane that is <b>above</b> the contrail is the tail fin. If you look at images from the current four-engine passenger planes, this part is of considerable size. To me it looks like the shadow of the plane’s tail unit (mainly fin and rudder), cast on the fresh contrail.

Imagine the sun standing low over the horizon (morning or evening, the video doesn’t say) in the direction the camera points to in the first close-up; it’s behind the plane. The contrail further behind is fully illuminated, it seems to be almost glowing. But most parts of the plane itself are shadowed, except for the lower front of the fuselage.

A cloud in the right place below the plane would have shown a shadow of the whole thing including the one cast by the contrail.

The only part of the plane that is above the contrail is the tail fin. If you look at images from the current four-engine passenger planes, this part is of considerable size.

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