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What our customers say about pdfFiller
See for yourself by reading reviews on the most popular resources:
Awesome, Love it. It is a good thing because I just didn't know they would charge me 9.00 dollars a month all at one time for the whole year upfront... Thanks for the heads up guys.
2015-03-13
Had similar capability on work computer(s)> I was fine with filling out PDF files and saving them. Ths allows signatures and other features that may get me to keep it.
2018-04-01
PDF filler has been a true hero for me and my daughters competition projects and has placed first!
It is very easy to use and convenient! I love how there are many options for fonts and sizes and how easy it is to print the document and save it!
Sometimes when I print out the documents it is really tiny and hard to read. This is the only con to using this product that I can think of.
2017-09-26
I make lots of documents and list for my job as admissions in a assisted living facility, this has been by far the most effective way to make them pdf files thus far.
2024-01-16
I had to start over, from hitting the wrong "back up", but have it okay now. I don't expect to need it again, but this software made it much easier. Thank you!
2021-10-04
Document Signing and Editing Issues
I just spent about an hour or so with Kara, one of your most helpful and patient online chat professionals. I was in the process of completing a contract and addendums where my Buyer was pressing me. I sent it out to my Seller and the Buyer once and ran into a number of editing and fillable field issues. So I recalled it. Kara took me step by step through each issue and patiently explained everything to me via zoom and screen share. She even went a step further and pointed out some features to me that will help me in the future. Even though I was a bit stressed in trying to get my documents completed, she calmed me down with her knowledge level and patience.I sure hope if I ever need pdfFiller's live chat support again, I'm lucky enough to get Kara again or someone with the same level of expertise. I enjoyed chatting and working with her.Joyce
2021-09-07
I have not used PDF Filler before
I have not used PDF Filler before. I took me awhile to get familar with the product. works great. Thank you Raul
2021-07-21
Pets lives do matter too
the very easy way to register your family pet pets lives to do matter register your dog help me keep up with the history of the pets
2021-04-18
I am a relatively new user to pdffiller, but have found the platform user friendly and does exactly what I need it to. Helping me modernise a lot of statutory requirements for e-signatures and template creations.
When I experienced issues loading documents due to permissions through my work network, the support team at pdffiller responded quickly and continued assisting myself and co-ordinated with my employers IT support function to resolve it within 24 hours, allowing me to get on with my job.
2020-09-25
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What is diffraction limited resolution?
An optical system with the ability to produce images with angular resolution as good as the instrument's theoretical limit is said to be diffraction limited. The resolution of a given instrument is proportional to the size of its objective, and inversely proportional to the wavelength of the light being observed.
What is meant by the diffraction limited resolution of a telescope?
angular resolution. Ability of a telescope to distinguish between adjacent objects in the sky. Diffraction-limited resolution. Theoretical resolution that a telescope can have due to diffraction of light at the telescope's aperture. Depends on the wavelength of radiation and the diameter of the telescope's mirror.
What do we mean by diffraction limit of a telescope?
What is the diffraction limit of a telescope? The minimum angular separation of two sources that can be distinguished by a telescope depends on the wavelength of the light being observed and the diameter of the telescope. This angle is called the DIFFRACTION LIMIT.
What is meant by the resolution of a telescope?
The resolution, or resolving power, of a telescope is defined as being the minimum angular separation between two different objects which can be detected.
How do you find the diffraction limit of a telescope?
The diffraction limit is defined by the equation =1.22 /D, where is the angle you can resolve, is the wavelength of the light, and D is the diameter of your objective mirror (lens). The maximum resolution that can be achieved by any optical system is set by the diffraction limit.
How does diffraction affect resolution?
Diffraction causes points of light which are close together to blur into a single spot: it sets a limit on the resolution with which one can see. If the light passes through a circular aperture.
How does magnification affect resolution?
A simple answer is that resolution of an optical system is its ability to separate two closely spaced objects. Resolution In general as the magnification increases the resolution increases, however, this much more complicated than it seems.
What does resolution depend on?
The limit of resolution (or resolving power) is a measure of the ability of the objective lens to separate in the image adjacent details that are present in the object. The wavelength of light is an important factor in the resolution of a microscope. Shorter wavelengths yield higher resolution.
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