Stanley Gill notably refers to an East Anglian novelist and author known for his works that often explore themes of rural life and the human condition. However, there may also be other references depending on the context, such as a person in business or another field.
Spontaneous parametric down-conversion by 
Ciro Santilli 37 Updated 2025-07-11 +Created 1970-01-01
Ciro Santilli 37 Updated 2025-07-11 +Created 1970-01-01You can then detect one of the photons, and when you do you know that the other one is there as well and ready to be used. two photon interference experiment comes to mind, which is the basis of photonic quantum computer, where you need two photons to be produced at the exact same time to produce quantum entanglement.
Features Alan Migdall of the National Institute of Standards and Technology. Produced by the Joint Quantum Institute (JQI).
Mentions that this phenomena is useful to determine the efficiency of a single photon detector, as you have the second photon of the pair as a control.
Also briefly describes how the input energy and momentum must balance out the output energy and momentum of the two photons coming out (determined by the output frequency and angle).
Shows the crystal close up of the crystal branded "Cleveland Crystals Inc.". Mentions that only one in a billion photon gets scattered.
Also shows a photomultiplier tube.
Then shows their actual optical table setup, with two tunnels of adjustable angle to get photons with different properties.
Very short whiteboard video by Peter Mosley from the University of Bath, but it's worth it for newbs. Basically describes spontaneous parametric down-conversion.
One interesting thing he mentions is that you could get single photons by making your sunglasses thicker and thicker to reduce how many photons pass, but one big downside problem is that then you don't know when the photon is going to come through, that becomes essentially random, and then you can't use this technique if you need two photons at the same time, which is often the case, see also: two photon interference experiment.
Optimal projection equations are mathematical formulations used in various fields, particularly in optimization and data analysis, to find the best representation of data in a reduced-dimensional space. These equations help to project high-dimensional data onto a lower-dimensional space while preserving essential characteristics of the data. ### Key Concepts 1. **Projection**: In a mathematical and geometrical sense, projection refers to mapping points from a higher-dimensional space to a lower-dimensional space. This is often done through linear transformations.
This actually happens in Winter. But they are so fucking euphemistic that winter has to be removed from the calendar.
The TenDRA Distribution Format (TDF) is a standardized method for representing, distributing, and manipulating software source code. It is closely associated with the TenDRA compiler, which is designed for the implementation of programming languages, primarily C and C++. TenDRA emphasizes strong typing, modularity, and the ability to support multiple programming languages.
Abdigani Diriye is a notable figure in the field of computer science, particularly known for his work in artificial intelligence and human-computer interaction. He has contributed to research in areas such as machine learning, data science, and the development of technologies that improve user experience. Diriye is also recognized for his work related to the intersection of technology and social impact, focusing on how digital innovations can benefit marginalized communities.
"The Eureka" can refer to several things, depending on the context: 1. **Eureka (Exclamation)**: The word "Eureka" comes from the Ancient Greek word "heurískō," which means "I have found it." It is famously attributed to the ancient Greek scientist Archimedes. He is said to have exclaimed "Eureka!" upon discovering a method to determine the purity of gold while taking a bath.
Tom Kilburn (1921-2001) was a prominent British computer scientist and engineer known for his significant contributions to the early development of computing technology. He was one of the pioneers behind the design and implementation of the Manchester Mark I, one of the first stored-program computers. His work laid the groundwork for future advancements in computing and computer science. Kilburn's contributions extended beyond hardware; he was also involved in software development and programming techniques during the early years of computing.
In the context of control theory, "orbit" often refers to the trajectory or path that a dynamical system follows in its state space over time. Specifically, an orbit is defined as the set of states that a system can reach from a given initial state under the influence of its governing dynamics.
Parasitic oscillation refers to unwanted oscillations that occur in electronic circuits, particularly in amplifiers, oscillators, or RF (radio frequency) circuits. These oscillations are not part of the intended signal and can interfere with the normal operation of the device, degrade performance, and affect signal integrity. Parasitic oscillations can arise from various sources, including: 1. **Feedback Paths**: Unintended feedback loops can create oscillations.
Perceptual Control Theory (PCT) is a psychological framework developed by William T. Powers in the 1960s. It is rooted in systems theory and focuses on understanding behavior as a form of control rather than a direct response to stimuli. At its core, PCT posits that individuals act in ways that maintain certain perceptions within their desired levels, which Powers refers to as "reference levels.
Pinned article: ourbigbook/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 2. You can publish local OurBigBook lightweight markup files to either OurBigBook.com or as a static website.
Figure 3. Visual Studio Code extension installation.
Figure 5. . 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. 
- 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