Often just called collimated light due to the collimator being the main procedure to obtain it.
However, you move very far away from the source, e.g. the Sun, you also get essentially parallel light.
The most important type of lens is the biconvex spherical lens.
If you pass parallel light.
Ciro Santilli used to play video games when he was young. But after he reached 18 he got bored of them.
The problem is that no matter how you look at, the how to become famous in the real world game is just always more interesting and fulfilling.
Therefore adult Ciro enjoys only the following types of video game content in video form, so that other people waste their lives playing the games while you only see the highlights:
- speedrunning, including:
- tool-assisted speedrun, Ciro's favorite by far
- real-time attack speedrun
- meta breaking glitches, including in speedrunning and on PvP-games.
- Magic: The Gathering
- Video game reviews
The aspect Ciro enjoys about non-PvP games is atmosphere. Not as conveyed by useless story telling, but as conveyed by music and graphics, and the context deep idea. Legend of Zelda and Metroid come to mind.
And too many games commit the sins of dependency of dexterity, no save states, how do I skip this boring part, or jump straight to the beautiful one?
Another important point is; the perfect video game is an infinitely hard one.
It also doesn't help if you are already typing on a computer all day long on your job. Hands get tired. Eyes have an infinite capacity to consume useless YouTube videos however. Medically proved.
As a result, Ciro just watches videos about video games. Notably games he played when he was a teenager and already understand the rules for.
And things got even worse as after Ciro Santilli's Open Source Enlightenment, and he started to feel bad about playing any game that is not open source.
Supercut of Doug S02E13 "Doug's Lost Weekend" (1992)
Source. Ciro Santilli used to watch Doug as kid. Of all the episodes, only this one stuck to his mind as an adult. It really drove the point home. The pain and joy of being addicted to anything really. Thankfully wheneve Ciro got addicted to a video game, he also quickly got tired of it. His last temporary addiction episode as of 2022 was Cataclysm DDA!
It is also so awesome how the episode pictures Dougs imagination while playing the video game, which is much more realistic than the actual crude graphics. The Nintendo hard reference is also clear.
Another great point of the episode is how good it is to play a single player video game taking turns with a friend on your side. Both people have to be fully engaged, and the game has to be hard. Perhaps those days are over now that everyone has their own computer and can each play together... and that is a huge shame. When playing on the couch with a friend, the one who is not playing can act as a copilot and thing more broadly as the other focuses on more specific details of execution. One is also reminded of pair programming.
Another great point is, partially when you are addicted, to play the video game at night until late, or very early in the morning. Ciro has fantastic memories of playing Zelda on the Nintendo 64 on Sunday mornings, or his emulation experiences from late weekend evenings at university: Video "Samba e Amor by Caetano Veloso (1975)".
The followup lucky hat segment is also amazing: doug.fandom.com/wiki/Doug%27s_Lucky_Hat
Carl Zeiss, Explained by Asianometry (2021)
Source. It was founded by some of the authors of the influential paper Deep learning with coherent nanophotonic circuits.
Funding:
- 2023: 1.1m pounds www.uktech.news/deep-tech/lumai-grant-20230215
This section discusses the pre-photon understanding of the polarization of light. For the photon one see: photon polarization.
People were a bit confused when experiments started to show that light might be polarized. How could a wave that propages through a 3D homgenous material like luminiferous aether have polarization?? Light would presumably be understood to be analogous to a sound wave in 3D medium, which cannot have polarization. This was before Maxwell's equations, in the early 19th century, so there was no way to know.
Pinned article: Introduction to the OurBigBook Project
Welcome to the OurBigBook Project! Our goal is to create the perfect publishing platform for STEM subjects, and get university-level students to write the best free STEM tutorials ever.
Everyone is welcome to create an account and play with the site: ourbigbook.com/go/register. We belive that students themselves can write amazing tutorials, but teachers are welcome too. You can write about anything you want, it doesn't have to be STEM or even educational. Silly test content is very welcome and you won't be penalized in any way. Just keep it legal!
Intro to OurBigBook
. Source. We have two killer features:
- topics: topics group articles by different users with the same title, e.g. here is the topic for the "Fundamental Theorem of Calculus" ourbigbook.com/go/topic/fundamental-theorem-of-calculusArticles of different users are sorted by upvote within each article page. This feature is a bit like:
- a Wikipedia where each user can have their own version of each article
- a Q&A website like Stack Overflow, where multiple people can give their views on a given topic, and the best ones are sorted by upvote. Except you don't need to wait for someone to ask first, and any topic goes, no matter how narrow or broad
This feature makes it possible for readers to find better explanations of any topic created by other writers. And it allows writers to create an explanation in a place that readers might actually find it.Figure 1. Screenshot of the "Derivative" topic page. View it live at: ourbigbook.com/go/topic/derivativeVideo 2. OurBigBook Web topics demo. Source. - local editing: you can store all your personal knowledge base content locally in a plaintext markup format that can be edited locally and published either:This way you can be sure that even if OurBigBook.com were to go down one day (which we have no plans to do as it is quite cheap to host!), your content will still be perfectly readable as a static site.
- to OurBigBook.com to get awesome multi-user features like topics and likes
- as HTML files to a static website, which you can host yourself for free on many external providers like GitHub Pages, and remain in full control
Figure 3. Visual Studio Code extension installation.Figure 4. Visual Studio Code extension tree navigation.Figure 5. Web editor. You can also edit articles on the Web editor without installing anything locally.Video 3. Edit locally and publish demo. Source. This shows editing OurBigBook Markup and publishing it using the Visual Studio Code extension.Video 4. OurBigBook Visual Studio Code extension editing and navigation demo. Source. - Infinitely deep tables of contents:
All our software is open source and hosted at: github.com/ourbigbook/ourbigbook
Further documentation can be found at: docs.ourbigbook.com
Feel free to reach our to us for any help or suggestions: docs.ourbigbook.com/#contact








