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How does the security features differ from standard android phones? Is the only difference the apps that can be just as well installed on a standard android phone in the play store or are there some additional layers?Read more

This is a general question about quadratic LineElement. It does not appear to be documented or have examples of its use. What is it ? Does it have 1 or 2 dimensions ? Are there any examples of its use ? I am going to be generating lattices of 100-5000 LineElements and would like toRead more

This is a specialization of this question. When there is the option to use glass or gel filter on certain wide-diameter lens: How would the optical performance of these two types of ND filters compare? Consider: The position of the filter is the opposite. Does front-vs-back position impact image quality? Are glass filter inherently sharperRead more