PF Photo Contest - Obtuse Angle (11/16-11/22)

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ZapperZ
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Obtuse Angle

An obtuse angle is an angle that is greater than 90 degrees but less than 180 degrees. Your photo must clearly show, as its main subject, something that has such an angle. Per our rules, this must not be a drawing, picture, sketch, etc.

Contest Rules:

1. Any digital photo or digitally-scanned photo relevant to the theme will be accepted within the contest period. In case there's a gray area, or you're not sure if the picture is suitable, check with me first.

2. Size limitations: Your photo is only limited to the file size limitation set by PhysicsForums. However, your may want to consider reducing the size of your photo if the file size exceeds 1 Mb. If your file is being hosted elsewhere, I will have to see how it is being displayed here, and I may ask you to resize and resubmit if it causes problems.

3. Upload your photos to any of the photo servers such as imageshack or photobucket. Then post it the relevant contest thread and link your picture using the img command. PM me if you do not know how. Alternatively, you may simply upload your image file to PF, and then have the full image displayed in your post.

4. Only ONE picture per member per contest. Once a picture is posted, it cannot be changed other than a total withdrawal by that member from that week's photo contest. Exceptions will be made for modification to comply with the rules, such as resizing.

5. At the end of the contest period, I will open a poll and every PF member can vote for the picture they like best.

6. Note that in case we have a large number of entries, I will do the polling in more than one thread. If that's the case, you can vote in each of the polling threads. The photos will be assigned in the polling threads in the order they were submitted.

7. The photo of the subject must be something that you took directly, not via in intermediary medium, and not taken by someone else. Unless otherwise noted, a photo of another photo, painting, print, etc. does not qualify.

8. You can use a picture only once. Once it is used in a contest, it cannot be reused in another contest.

9. Please post only pictures meant for submission in this thread. Photos not meant for submission must not be posted in the contest thread. Posting of more than one photos by a member may result in an automatic disqualification from the week's contest.

Zz.
 

Answers and Replies

  • #2
kuruman
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Points of clarification: A pole stuck to the ground at an angle relative to the vertical forms a variety of angles with the horizontal plane, from acute to right to obtuse. Does that qualify? If we are to be constrained in 2D, something resembling the letter X has two obtuse and two acute angles. Does that qualify?
 
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ZapperZ
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Points of clarification: A pole stuck to the ground at an angle relative to the vertical forms a variety of angles with the horizontal plane, from acute to right to obtuse. Does that qualify? If we are to be constrained in 2D, something resembling the letter X has two obtuse and two acute angles. Does that qualify?

That does qualify, because one of the angles (the bigger angle between the leaning pole and the ground) is obtuse.

Zz.
 
  • #4
kuruman
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obtuse_2---1.jpg
 
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  • #5
Marzena
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marzena_obtuse_angle.JPG
 
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  • #6
morrobay
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1573966125291.png


No ands ifs or buts about it
 
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  • #7
JBA
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TARS Aerostat 2.jpg
 
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  • #8
morrobay
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What kind of camera?
 
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JBA
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  • #11
Rubidium_71
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Tilting Towers.jpg
 
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  • #12
ZapperZ
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DSCN3933.jpg


Zz.
 
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  • #14
epenguin
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Quite a lot of obtuse angles here, in fact in the structure itself nothing but. So, to echo what we are hearing a quite lot in my country at the moment, Vote for Me!
However I must be fair to my co-candidates. A lot of them are very acute. And others are quite right. :oldbiggrin:


DSCN0032.JPG
 
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  • #15
ZapperZ
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Final day to submit your photo for this contest.

Zz.
 

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