151–160 of 241 posts
Looking at the page source I'm doubly impressed there seems to be no use of third party libraries. I personally happily use three.js, but still, wow. https://ciechanow.ski/js/base.js https://ciechanow.ski/js/lenses.js
Umm well, not really.
The sensitivity of a digital CCD or CMOS sensor never changes; it has one 'native ISO' equivalent sensitivity and that's all. It creates the same output signal in response to a photon every time.
Varying the pseudo-ISO simply varies the gain of the downstream post-readout amplifier. That's where noise is introduced.
Sometimes it's better to take a deliberately underexposed photo and tweak regions of it in post to achieve the desired exposure instead of introducing global noise from in-camera amplification.
> Alternatively, we could increase the sensitivity of the sensor which is described using the ISO rating. Umm well, not really. The sensitivity of a digital CCD or CMOS sensor never changes; it has one 'native ISO' equivalent sensitivity and that's all. It creates the same output signal in response to a photon every time. Varying the pseudo-ISO simply varies the gain of the downstream post-readout amplifier. That's w…
How is this the first time I have gained an intuitive feeling for refraction? Instead I've been taught to simply accept Snell's law. It feels very powerful that a single hypothesis - and a reasonable one at that (namely that the electrical field is continuous at the junction between materials) is enough to explain refraction!
- water: when waves go from, say, deeper to shallower water, their speed changes. If they are moving at an angle, refraction is seen. This can be explained by drawing wavefronts. The wavefront doesn't hit the shallower water all at the same time, and so does not slow down all at once, but gradually.
- wheels: when rolling axle with two wheels goes from pavement to grass on an angle, its direction will bend direction, due to the change in speed, which is experienced by one wheel ahead of the other.
Earlier quoted context omitted.
Russians use “yous” or “вы” which is both gender-neutral and a polite pronoun.
That's for the second person pronoun, which are all gender neutral in Russian, whether they are singular or plural. (Like English.) We're talking here about third person pronouns, and the "the plural is the polite version and the singular is the casual version" doesn't extend to those. You wouldn't refer refer to someone in the third person as "они" rather than "он" to be polite.
you wouldn’t do that because Russia is a paradise for homophobia, not because it does not make sense.
“Они” is a valid pronoun for the same thing than now means “them” in woke English.
The only thing better than a pinhole camera is a pinhole camera with multiple holes. Let me explain: When you have two holes (apertures), their images would likely overlap (depending on the arrangement). Imagine you took two photos from a few millimetres apart to the left and to the right, then you superimposed them. Some areas would look ok (as both views saw the same distant object) and some would be less ok (of ob…
Although I knew most of technical aspect described having immersed myself in Photography several years ago, I cannot express properly how GOOD this article is. The sliders and diagrams are brilliant for helping a layperson understand how it all works. Kudos!
You'd like their other work : https://ciechanow.ski/lights-and-shadows/ https://ciechanow.ski/gears/ https://ciechanow.ski/tesseract/ Etc. Check out the whole blog! It's amazing. These are some of the most intuitive explanations coupled with the slickest animation / demo work I've ever seen. All of that put together into crystal clear educational material is such a rare gem and requires incredible talent. Impressive…