Viewing profile — DarkSucker

The paper describes a split Alvarez (Lohmann) lens [1,2] with a phase modulator between them. I didn't do the math, but it looks like the phase modulator is optically equivalent to…

Each pixel of such a scanner would need to somehow scan the spectral content. For example, imagine an array of fibers each transporting light from image plane pixel coupled to a sp…

Sounds great, but I often find myself wondering "where's the catch?". There's not enough info in the abstract judge for myself whether the idea has legs. I'm sure it'll get more pr…

As I read the article. The tsunami wave (water) displaces air at the surface and creates a sound wave, and gravity waves, that travels to the upper atmosphere. These waves then int…

Thanks. I wasn't thinking of enums. To the extent one designs a trait to use an enum type (or the enum to satisfy the trait), one wins. But it seems impossible to avoid code to han…

The article's `expression problem matrix` section states that the goal is make it `easy to add ops` and `easy to add types`. My learning of Rust so far indicates Rust satisfies bot…

I think the alternative is shown in figure 2. SiN (silicon nitride) is different from optical fiber. Both versions shown in figure 2 lack detail, especially in the small boxes labe…

Can anyone speak to the image processing used? In particular, how is depth inferred from a single 2D image? It seems to me one would need both depth and angle over the field of vie…

That link made my day! Thank you. From what I read, their builds perform better than the originals, and they even make landscape versions. Woo hoo! RPN rules in my book. I picked u…

Thanks! I'm sick and couldn't bring myself to do the wavelength calculation. Your comment helped my thoughts. I think people working on microwave equipment (frequency counters, ...…

Neither the article nor official link gave much optical design detail. Here's my guess. A (substantially) radially symmetric system comprising a wide-angle positive-short-focal-len…

The new design design uses on axis mirrors to image the photomask onto the wafer, and on axis mirror systems are far easier to design and fabricate compared to zig zag (off axis) s…

It seems to me this data could be used to correlate a species/genus to a location if one knows where the samples came from. If one also knows the date of the geological strata the …

Can someone provide/link-to a principle of operation? I looked at references ( https://www.dragonflytelescope.org/publications.html ) but they point to publications that look to be…

It's a consequence of the relationship between absorption and index of refraction in glasses, which follow the Karmers-Kronig relationship [0]. As the wavelength approaches atomic …

I wasn't aware that Canon used flourite elements. You learn something new every day. Nice. Their telephoto lenses also use holographic elements, and I attended a talk (1990 ish) wh…

Industry, please give us good search tools like those for researching articles: ("fog" near "coastline") AND ("lighthouse"). Or that offer regular expressions so I can search with …

> Notebooks are still a great way to preserve the little details of "what the hell was I thinking?" Here here. WWIT (what was I thinking) is so valuable. I'm spending much more tim…

While neither animated nor as large as animatedknots, the Notable Knot Index https://notableknotindex.webs.com/ contains a short list of knots along with insightful comments on the…

I did my own experiment on starting to read the article, and, as the author describes, I got the ball color, but not the persons hair color. On thinking about my experience, I like…

BRIAR's how it works page depicts Wi-Fi and Tor also, so range isn't necessarily an issue.

Not being familiar with cosine distance, I found an NIST link: https://www.itl.nist.gov/div898/software/dataplot/refman2/au... . It seems like the main difference between convoluti…

> I'm not the type to get bitchy with customer service reps. I've managed teams that do that job, and I know how scripted their support has to be. "has to be" burns. It could be di…

Nice. Almost what I want: simplicity, images (for plots), and no adds or tracking. However, I want to author pages on optics, and I want to use MathJax ( https://www.mathjax.org/ )…