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What our customers say about pdfFiller
See for yourself by reading reviews on the most popular resources:
Great SAAS for individuals who want to archive and update forms periodically. Final product is neat and most of all easily validated with digital signatures.
2016-03-02
I found the system complicated for someone not very experienced with computers. I still do not know how to find, on your system, the forms that I have completed. Where are they? How do I save them to my computer? I will keep working to find the answers.
2016-04-02
What do you like best?
When I fill out the document, I can create automatically on the line.
What do you dislike?
I can't print the documents in the editing process.
Recommendations to others considering the product:
It is difficult to create a various version from original documents.
What problems are you solving with the product? What benefits have you realized?
It is easy to fill out and share the documents, unlike others.
When I fill out the document, I can create automatically on the line.
What do you dislike?
I can't print the documents in the editing process.
Recommendations to others considering the product:
It is difficult to create a various version from original documents.
What problems are you solving with the product? What benefits have you realized?
It is easy to fill out and share the documents, unlike others.
2019-01-28
great customer service - sam
great, easy to use, saves us a fortune on an extra phone line for a fax. Great customer service, I always use live chat and get answers and resolution within a few minutes. I have only had to use support 3 times in a year because the program is so user friendly.
2019-03-29
Love, Love, Love the PDF Filler
I recommend this product.
This program makes it so easy to fill out any PDF. It really helps in our office for everything to appear highly professional.
It is taking me awhile to learn this software, but I think that once I master it that it will be very helpful in our office.
2018-05-09
What do you like best?
I like how easy it is to navigate the site.
What do you dislike?
I dislike how sometimes my documents don't get sent out, I have to resend a couple of times before they are received.
What problems is the product solving and how is that benefiting you?
It is allowing me to edit certain documents that I was once before remaking the entire document for different clients.
2022-11-12
This is a super good program, it helped me all along with my university applications, it's really fast and intuitive. Thanks, team PdfFiller :) Totally worth the money
2021-08-27
Being a small plumbing business I used PDFfiller for many forms I needed! The ease of filling out the forms was just what I needed!!
Being a one man shop I needed every minute of the day! PDFfiller was just perfect - I would pull up invoice fill it out send it off!! $$ in bank!! Perfect for a small Company as myself who needs every short cut to save as much time as possible!!
Thanks so much!!
Retired Plumbing Contractor
Whose only worry now is keeping the varmints away from my garden!!
2020-09-24
What do you like best?
PDF is accessible and gives me the tools I need to edit, review and send docs. I like the ability to change my signature and erase as needed.
What do you dislike?
Sometimes erasing can be problematic, but nothing a little patience can't deal with. Would be nice to be able to erase large segments, sort of like making a large text box.
Recommendations to others considering the product:
It's great.
What problems are you solving with the product? What benefits have you realized?
Basically getting and sending signatures. Saves quite a bit of time and of course, the wait for something to get thru the snail mail.
2020-08-13
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What is the formula for resolution?
Equation (1) indicates that the resolution is the difference between peak retention times divided by the average peak width. In a peak with Gaussian distribution, the peak width is W = 4 (where is the standard deviation) and the peak FHM is W0. 5h = 2.354.
How do you calculate resolution of a microscope?
NA= n x sin Where n is the refractive index of the imaging medium and is half of the angular aperture of the objective. D= /2 NA. Where is the wavelength of light used to image a specimen. D= 2 /NA2 R= 1.22 /Naomi+Second.
What is the limit of resolution of a microscope?
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. It is the distance between two points in the object that are just resolved in the image.
What is the resolution of a compound microscope?
In a compound microscope, the wavelength of the light waves that illuminate the specimen limits the resolution. The wavelength of visible light ranges from about 400 to 700 nanometers. The best compound microscopes cannot resolve parts of a specimen that are closer together than about 200 nanometers.
What is the limit of resolution?
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. It is the distance between two points in the object that are just resolved in the image.
What is Abbé's equation?
Abbé's equation. This is the diffraction-limited resolution of an optical system. If all aberrations and distortions are eliminated from the optical system, this will be the limit to resolution. If aberrations and distortions are present, they will determine the practical limit to resolution.
What is Abbé's Law?
Abbé's principle relates to accuracy when measuring dimensions. This principle states that, “In order to improve measurement accuracy, the measurement target and the scale of the measuring instrument must be placed in a collinear fashion in the measurement direction.”
What is Abbé's diffraction limit?
The Abbé diffraction limit for a microscope is called the numerical aperture (NA) and can reach about 1.41.6 in modern optics, hence the Abbé limit is d = /2.8. To increase the resolution, shorter wavelengths can be used such as UV and X-ray microscopes.
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