Recent content by Suppaman
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B How to calculate size of objects in digital photo
I am in my late 70s with health issues and Covid is around, I do spend time in my chair writing SF managing my pills and stuff. I am a retired Senior Software Quality Assurance Engineer. Before I retired I was testing time of flight mass spectrometers. Science is one of my hobbies along with...- Suppaman
- Post #17
- Forum: General Math
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B How to calculate size of objects in digital photo
I want a formula to calculate the size of the image on the camera sensor. This tells me how much resolution an image will have, If I know something 100 feet away will require 1000 pixels to show a face I would have to use a longer lens or move closer if the formula said I would only cover 300...- Suppaman
- Post #14
- Forum: General Math
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B How to calculate size of objects in digital photo
It measures the reflection time and the corner reflector gives me a better range. It works fine.- Suppaman
- Post #10
- Forum: General Math
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B How to calculate size of objects in digital photo
I have a laser rangefinder and a mirror that reflects it back along the same path so I can tell how far away something is. I could take an image of a postage stamp at some distance and look at it in my editor to see how many pixels it covers, But a formula must be available and I do not see how...- Suppaman
- Post #8
- Forum: General Math
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B How to calculate size of objects in digital photo
I do not think the pixels know how an image may be cropped. Assume the image is not cropped, same size as the sensor.- Suppaman
- Post #6
- Forum: General Math
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B How to calculate size of objects in digital photo
Just as an image from an orbiting camera has limits on the smallest object it can see, this is sort of the same question. I am looking for a way to tell how much detail will be available using a formula.- Suppaman
- Post #5
- Forum: General Math
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B How to calculate size of objects in digital photo
Assume all pixels are used. Full frame.- Suppaman
- Post #3
- Forum: General Math
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B How to calculate size of objects in digital photo
Please move to a better forum if available. We have two friends discussing their photography efforts. "you know that your photo of people with large one-inch square buttons on their coats will not look accurate," said Moe. "Why is that," asked Curly. Moe answered, "You have the model...- Suppaman
- Thread
- Digital Photo
- Replies: 19
- Forum: General Math
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B Can We Generate Detectable Gravitational Waves in a Lab?
As it is well known that only CW can communicate when all other methods fail. When voices are a babble and the noise is painful the narrowest bandpass will help focus the mind and communication will be accomplished.- Suppaman
- Post #20
- Forum: Astronomy and Astrophysics
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B Can We Generate Detectable Gravitational Waves in a Lab?
About the value of CW?- Suppaman
- Post #18
- Forum: Astronomy and Astrophysics
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B Can We Generate Detectable Gravitational Waves in a Lab?
My thought revolves around using the current GW detectors to detect GWs we might generate on earth. I think the experiments you described were not detecting GWs, just a mass near by.- Suppaman
- Post #17
- Forum: Astronomy and Astrophysics
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B Can We Generate Detectable Gravitational Waves in a Lab?
Morse code is no longer needed for your HAM radio license: www.arrl.org is displayed at the bottom of your post.- Suppaman
- Post #15
- Forum: Astronomy and Astrophysics
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B Can We Generate Detectable Gravitational Waves in a Lab?
er, CW is required for life. Now, if I did move your arm I am sure it would not be detectable. My first mentor was JWC.- Suppaman
- Post #13
- Forum: Astronomy and Astrophysics
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B Can We Generate Detectable Gravitational Waves in a Lab?
Would it be fair to say I know how to move objects by my thoughts (TK) but we do not have the ability to detect the movement?- Suppaman
- Post #9
- Forum: Astronomy and Astrophysics
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B Can We Generate Detectable Gravitational Waves in a Lab?
Yes, that was at the source of them but not at the detection point. My question was how much energy at the point of detection.- Suppaman
- Post #8
- Forum: Astronomy and Astrophysics