User talk:Jbergquist

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[edit] George Clarke Chandler, Pat Burns, etc.

Hi...please don't apply Category:People from Canada in broadcasting to individual articles; they should be filed only in the appropriate subcategory (Category:Canadian television personalities, Category:Canadian radio personalities, etc.) The "people in broadcasting" category is meant only as a parent for the subcategories; it's not supposed to contain any individual articles. Thanks. Bearcat 06:28, 20 September 2006 (UTC)

Thanks for the info. The categories you mentioned are an improvement. --Jbergquist 09:38, 21 September 2006 (UTC)

[edit] Victoria (crater) anaglyphs

I have removed the Victoria Crater anaglyphs from Opportunity rover because they could be made into one image using a tool similar to AutoStitch. Feel free to replace it with a stitched version. If you do replace the image, please tag the old images with {{db-g7}} so that they may be deleted. And by the way, the article for Victoria is here. (I have blanked the OrphanBot notice because you addressed the concerns raised). Happy editing! MER-C 06:42, 30 September 2006 (UTC)

One more thing, it's a good opportunity (no pun intended) to spam the Martian geography WikiProject. Happy editing! MER-C 06:49, 30 September 2006 (UTC)

I think the way to do it would be to stitch the all the L7s and all the R1s (so that you have two images), then make an anaglyph of the two images. Don't blame me if it goes wrong, because I'm too busy tagging stuff for deletion. MER-C 09:35, 30 September 2006 (UTC)
What is probably needed is an image editor for stitching anaglyphs which are not regular B&W or color images. There is more involved than just projecting pixels onto a sphere to create a panorama. The value of an anaglyph is its 3D content since there are two points of view, one for each eye. An additional complication is that the images have to be adjusted for the rotation of the head with apparent viewing angle. The B&W images and variations in lighting probably also contributed to making it difficult to achieve a match. As for me, I was just submitting a story. It is today's news. My contribution was the creation of the anaglyph and adjusting the plane of focus for the viewer. JPL's anaglyphs merge at infinity which makes viewing close-up difficult. Wiki has the right to enforce an editorial policy and content covers such matters as image size and the allocation of resources. But I think that editorial license would include the creation of anaglyphs from the raw images and making the adjustments which I did. The same thing could be done with an anaglyph that JPL produced to make it easier for a person to view and this was the motivating factor in the creation of the program that I used. The real story is what JPL and the scientific community is doing and I would prefer not to detract from that. So I choose to defer to Wiki on the removal. --Jbergquist 15:07, 30 September 2006 (UTC)
I just noticed the typo that I made on the image file names. Haste makes waste. I'll tag the anaglyphs for deletion. The panorama of Victoria (crater) from Wikimedia Commons was posted prior to the anaglyphs. --Jbergquist 20:42, 30 September 2006 (UTC)


The images which were removed but with corrected names. Click on an anaglyph to enlarge it. Standard red-blue glasses are needed to view them as intended.

The total number of pixels in all seven anaglyphs is just slightly larger than that in the largest versions of the NASA/JPL panoramic anaglyphs mentioned on the image pages. --Jbergquist 01:23, 1 October 2006 (UTC)

I guess some of these pictures could be useful for illustrating specific features of Victoria, such as Cape Verde and the other cape (name doesn't come to me). But for a general view of Victoria, something like the anaglyphs here would be more appropriate than 7 separate images. MER-C 07:28, 1 October 2006 (UTC)
Every anaglyph has a vertical line of "focus". With changes in distance in the scene this might be reduced to a single point of focus. In the anaglyph here[1] the focus seems to be on the precipice at the left. As one looks to the right, the alignment of the separate red and blue images gets increasingly worse. One can combine a set of images into a panorama by mapping them onto a sphere. But this only contains the angular information in a scene. Depth perception is lost in the process. Anaglyphs preserve the radial information along the line of sight. The two processes are complementary and neither view is complete in itself. If one tries to produce a panoramic anaglyph, one encounters a problem with the sides. Trying to reduce the problem by decreasing the separation with increasing angle also alters the perception of depth at the same time. The only way to preserve a scene is to make a series of anaglyphs. A three dimensional scene could be divided up into a set of views like the faces of a regular polyhedron. With enough overlap one could do panoramas. With two distinct images for each face, the perspective information is preserved. The number of images required to complete the scene depends on the field of view of the camera used. With a 24 degree field of view at least 15 images would be required for a 360 degree panorama and more would be needed if overlap is required to piece the scene together. One would need an adaptive viewer to shift the original images relative to each other in order to bring a particular point into focus. Such a viewer is not generally available at this time. The best that we can do in the way of public service is to publish a series of separate images. --Jbergquist 19:01, 2 October 2006 (UTC)
Here is a good article on VR and Planetary Exploration. --Jbergquist 19:00, 3 October 2006 (UTC)

Found a permanent home for one of your anaglyphs. MER-C 02:27, 5 October 2006 (UTC)

[edit] Orphaned fair use image (Image:Hro 102 15a.jpg)

Thanks for uploading Image:Hro 102 15a.jpg. The image description page currently specifies that the image is non-free and may only be used on Wikipedia under a claim of fair use. However, the image is currently orphaned, meaning that it is not used in any articles on Wikipedia. If the image was previously in an article, please go to the article and see why it was removed. You may add it back if you think that that will be useful. However, please note that images for which a replacement could be created are not acceptable under fair use (see our fair use policy).

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[edit] Leó Szilárd

Hi there. I just ran across your 13 January 2006 addition to The World Set Free, where you assert the following: "As fate or coincidence would have it, in reality the physicist Leó Szilárd read the book in 1932, conceived of the idea of nuclear chain reaction in 1933, and filed for patents on it in 1934."

I am very interested in this statement, as I am currently writing a history of engineering. Do you have a citable reference for these statements? If so, I think the Wikipedia article really needs them. Thanks for your help. Cbdorsett 08:42, 12 March 2007 (UTC)

Thanks for your reply. It looks like another user found a reputable source for the statement. FYI, we can't use other Wikipedia articles as sources. image:smile.png Cbdorsett 15:31, 30 March 2007 (UTC)

[edit] Fair use rationale for Image:Saddam verdict.png

Thanks for uploading Image:Saddam verdict.png. I notice the image page specifies that the image is being used under fair use but there is no explanation or rationale as to why its use in Wikipedia articles constitutes fair use. In addition to the boilerplate fair use template, you must also write out on the image description page a specific explanation or rationale for why using this image in each article is consistent with fair use.

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[edit] Orphaned non-free image (Image:CHEK-TV logo.png)

Thanks for uploading Image:CHEK-TV logo.png. The image description page currently specifies that the image is non-free and may only be used on Wikipedia under a claim of fair use. However, the image is currently orphaned, meaning that it is not used in any articles on Wikipedia. If the image was previously in an article, please go to the article and see why it was removed. You may add it back if you think that that will be useful. However, please note that images for which a replacement could be created are not acceptable for use on Wikipedia (see our policy for non-free media).

If you have uploaded other unlicensed media, please check whether they're used in any articles or not. You can find a list of 'image' pages you have edited by clicking on the "my contributions" link (it is located at the very top of any Wikipedia page when you are logged in), and then selecting "Image" from the dropdown box. Note that any non-free images not used in any articles will be deleted after seven days, as described on criteria for speedy deletion. Thank you. BetacommandBot 21:16, 10 July 2007 (UTC)

[edit] Welcome some feedback

Hello, my name is Isucheme and I am currently writing my first Wikipedia article on the Churchill-Bernstein Equation. The equation is used to find an average (convection) heat transfer coefficient to use in Newton’s Law of cooling for a cylinder in cross flow, and the mass transfer analogy, as described in the article, can be employed to find a mass transfer coefficient. I would appreciate any feed back you can give me on my article so I can make it a great article. Thank you. Isucheme 16:58, 23 October 2007 (UTC)

My understanding of turbulent flow and the Navier-Stokes equation is limited. I don't have an engineering background in fluid mechanics. Heat transport takes place by a 1st order convection and a 2nd order diffusion. The same is true for mass transport. What the Navier-Stokes equations might miss are boundary conditions. Energy can be exchanged by collisions and there may be some surface effects of the cylinder that need to be included. As to the transformation from one pair of dimensionless numbers to another, I am not competent to respond but if the form of the correlations match does that guarantee that the coefficients in each correlation will match also? I ran across a short but interesting article on Kolmogorov microscales today. Do dimensionless numbers and microscales have anything in common? The article is technical but some information about the origin of the equation and the names associated with it might be helpful. --Jbergquist 07:06, 24 October 2007 (UTC)