Hi everybody,
I think it's the underside of a mushroom
without google, seen in another post from forum
Quiz photos: photos suprise ... what is it?
-
- Moderator
- posts: 79386
- Registration: 10/02/03, 14:06
- Location: Greenhouse planet
- x 11074
Re: Quiz photos: photos suprise ... what is it?
Won!
It's your turn !
It's your turn !
0 x
Do a image search or an text search - Netiquette of forum
-
- Moderator
- posts: 79386
- Registration: 10/02/03, 14:06
- Location: Greenhouse planet
- x 11074
Re: Quiz photos: photos suprise ... what is it?
Not a photo quiz but an optical phenomenon to explain.
I have a motor with 4 threads distributed over a square.
When the engine is running, the circle of this "square" is not centered.
The phenomenon of non-centricity is better visible to the naked eye than in the photo. I did what I could:
Why?
(I have the solution, it's not very hard to find but ... it intrigued me for a few minutes and still deserves a little thought)
I have a motor with 4 threads distributed over a square.
When the engine is running, the circle of this "square" is not centered.
The phenomenon of non-centricity is better visible to the naked eye than in the photo. I did what I could:
Why?
(I have the solution, it's not very hard to find but ... it intrigued me for a few minutes and still deserves a little thought)
0 x
Do a image search or an text search - Netiquette of forum
-
- Moderator
- posts: 79386
- Registration: 10/02/03, 14:06
- Location: Greenhouse planet
- x 11074
Re: Quiz photos: photos suprise ... what is it?
As specified, it is better visible to the naked eye, so it is not an optical effect of the photo ...
Take your brain!
ps: the vaccinated are not allowed to participate
Take your brain!
ps: the vaccinated are not allowed to participate
0 x
Do a image search or an text search - Netiquette of forum
-
- Moderator
- posts: 79386
- Registration: 10/02/03, 14:06
- Location: Greenhouse planet
- x 11074
Re: Quiz photos: photos suprise ... what is it?
It runs on the RS:
0 x
Do a image search or an text search - Netiquette of forum
Re: Quiz photos: photos suprise ... what is it?
Hi everyone here is one in the same genre or you have to understand
it took me a while to understand
it took me a while to understand
0 x
-
- Moderator
- posts: 79386
- Registration: 10/02/03, 14:06
- Location: Greenhouse planet
- x 11074
Re: Quiz photos: photos suprise ... what is it?
It's not a photo Quiz Oli since there is the answer...
0 x
Do a image search or an text search - Netiquette of forum
- Obamot
- Econologue expert
- posts: 28729
- Registration: 22/08/09, 22:38
- Location: regio genevesis
- x 5538
Re: Quiz photos: photos suprise ... what is it?
Already there is the deformation due to the optics (which is not well centered) then there is the retinal persistence when it turns?Christophe wrote:Not a photo quiz but an optical phenomenon to explain.
I have a motor with 4 threads distributed over a square.
When the engine is running, the circle of this "square" is not centered.
20210812_174143.jpg
The phenomenon of non-centricity is better visible to the naked eye than in the photo. I did what I could:
20210812_174237.jpg
Why?
(I have the solution, it's not very hard to find but ... it intrigued me for a few minutes and still deserves a little thought)
Last edited by Obamot the 20 / 02 / 22, 17: 11, 2 edited once.
0 x
-
- Moderator
- posts: 79386
- Registration: 10/02/03, 14:06
- Location: Greenhouse planet
- x 11074
Re: Quiz photos: photos suprise ... what is it?
Almost but no...
0 x
Do a image search or an text search - Netiquette of forum
- Obamot
- Econologue expert
- posts: 28729
- Registration: 22/08/09, 22:38
- Location: regio genevesis
- x 5538
Re: Quiz photos: photos suprise ... what is it?
And why? Because there is a hole whose bottom is “light” and the other three “black”, suddenly when it turns, with retinal persistence, it gives the illusion that it is not centered: I am you good?
Last edited by Obamot the 20 / 02 / 22, 17: 18, 2 edited once.
0 x
-
- Similar topics
- Replies
- views
- Last message
-
- 7 Replies
- 4985 views
-
Last message by plasmanu
View the latest post
26/11/23, 12:54A subject posted in the forum : The bistro: site life, leisure and relaxation, humor and conviviality and Classifieds
-
- 8 Replies
- 8739 views
-
Last message by plasmanu
View the latest post
25/05/12, 17:20A subject posted in the forum : The bistro: site life, leisure and relaxation, humor and conviviality and Classifieds
-
- 24 Replies
- 17179 views
-
Last message by plasmanu
View the latest post
12/05/12, 19:36A subject posted in the forum : The bistro: site life, leisure and relaxation, humor and conviviality and Classifieds
-
- 3 Replies
- 5524 views
-
Last message by Christophe
View the latest post
28/02/12, 15:59A subject posted in the forum : The bistro: site life, leisure and relaxation, humor and conviviality and Classifieds
-
- 1132 Replies
- 242945 views
-
Last message by GuyGadeboisTheBack
View the latest post
23/03/24, 22:04A subject posted in the forum : The bistro: site life, leisure and relaxation, humor and conviviality and Classifieds
Go back to "The bistro: site life, leisure and relaxation, humor and conviviality and Classifieds"
Who is online ?
Users browsing this forum : No registered users and 156 guests