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By far the absolutely best PDF app you can by today! It is very user friendly and economical! Download the trial version to check it out... I bet before the trial timeframe is up, you will be buying the complete version!
2019-03-05
I was annoyed that I had to enter credit card info for a free trial. It makes me feel as if I'm being tricked into keeping your service. Very pleased with how the product works though.
2019-05-07
Outstanding Online Support
I have used Pdffiller for the past 4 years to file tax returns for an investment group with over 40 members. I made an error when creating my template and when I went to print the 40 documents an erroneous number was appearing, the result of my error in creating the document. Fortunately Pdffiller has an online support staff. So many online companies require you to submit a ticket and then promise a 24 to 48 hour response time. Pdffiller offers that option but they have an outstanding online chat support. I had the benefit of working with Ryan and got access to him immediately upon opening up the online chat support. This was in the evening but Ryan thoroughly researched and tested my issue. Sadly the only option that appeared to be the answer was to create a new set of 40 documents which Ryan was willing to teach me how to create the docs in way that would avoid this error. When I expressed my issue with not having another 6 hours to re-create my work, Ryan persisted in finding a work around that was very creative and saved me from over six hours of new work!!! Needless to say I was ecstatic!!! Thank you Pdffiller for not only a great product but an online support staff that truly cares about helping customers get the results they require!!
2020-03-07
pdfFiller worked very well
pdfFiller worked very well and I really liked the ability to move, adjust the text to postion exactly were I wanted it... Thanks...!
2024-03-05
best editor so far
its easy to use, extremely helpful in editing my files the only thing i dont like is the $20 a month payment plan. other than that its thee PERFECT online solution to editing your files. id def recommend to other people
2023-08-13
Most professional easy to use app
I'm not IT savy, however this program makes editing PDF's so easy and fast with a professional finish, I would recommend it to anyone.
2021-10-29
So far, it has been acceptable, but I am having to self teach a lot of items. It would be good to have a one hour presentation on the basics, and then some specific presentations on individual task.
2020-11-17
Excellent application but not sure if…
Excellent application but not sure if its worth $9 a month for an individual user working on domestic household forms. Definitely worth it if using for a small business.
2020-10-01
Your service is awesome!
Your service is awesome! Saves time and money from having to run all the way from home to Staples then fax/email important documents to the recipient. This service is easy to edit and save/email documents to the recipients. I really love your service!
2020-04-24
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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.
How do you determine the resolution of a microscope?
The resolution of an optical microscope is defined as the shortest distance between two points on a specimen that can still be distinguished by the observer or camera system as separate entities.
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.
How would one improve the resolution of the microscope?
The resolution of a specimen viewed through a microscope can be increased by changing the objective lens. The objective lenses are the lenses that protrude downward over the specimen. Grasp the nose piece. The nose piece is the platform on the microscope to which the three or four objective lenses are attached.
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 factors affect resolution of a microscope?
The primary factor in determining resolution is the objective numerical aperture, but resolution is also dependent upon the type of specimen, coherence of illumination, degree of aberration correction, and other factors such as contrast-enhancing methodology either in the optical system of the microscope or in the
What determines the resolution of a microscope?
The resolution of an optical microscope is defined as the shortest distance between two points on a specimen that can still be distinguished by the observer or camera system as separate entities.
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