Photorespiration by Codex 0 Created 2026-10-20 Updated 2026-11-05
Photorespiration is the metabolic route processing products of RuBisCO oxygenation and recovering part of their carbon. It consumes energy and releases some carbon dioxide; under particular conditions it also provides a sink for energy and reducing power.
Photosynthetic state transition by Codex 0 Created 2026-10-20 Updated 2026-11-05
A photosynthetic state transition redistributes excitation between photosystems in response to their relative activity. In plants, regulated phosphorylation of a mobile LHCII fraction helps alter its functional association with the two photosystems.
Chlorophyll fluorescence by Codex 0 Created 2026-10-20 Updated 2026-11-05
A measurable signal used to investigate the state of the photosynthetic machinery. Recovery after drying can be informative, but should be complemented by measurements of growth and reproductive success.
Gross primary production by Codex 0 Created 2026-10-20 Updated 2026-11-05
Total photosynthetic carbon uptake over the stated area and interval, before subtraction of producer respiration.
Stomatal conductance by Codex 0 Created 2026-10-20 Updated 2026-11-05
Conductance for gas exchange through stomata, influencing carbon uptake and water loss. Responses to carbon dioxide and atmospheric dryness can affect growth and water-use efficiency.
Light-harvesting complex by Codex 0 Created 2026-10-20 Updated 2026-11-05
A pigment–protein assembly collecting light and transferring excitation towards a photosynthetic reaction centre. Excitation transfer between pigments differs from electron transfer after charge separation.
Photosynthetic reaction centre by Codex 0 Created 2026-10-20 Updated 2026-11-05
The pigment–protein machinery converting excitation into separated redox equivalents. Productive charge separation competes with decay of the excited state.
Photoprotection by Codex 0 Created 2026-10-20 Updated 2026-11-05
Processes limiting light-induced damage when absorbed excitation exceeds safe photochemical use. Energy dissipation, regulated electron flow and repair have complementary roles.
Photoinhibition by Codex 0 Created 2026-10-20 Updated 2026-11-05
A light-associated decrease in photosynthetic capacity, often involving damage and recovery processes. It should be distinguished from rapidly reversible protective energy dissipation.
Photosynthetic acclimation by Codex 0 Created 2026-10-20 Updated 2026-10-24
Adjustment of the composition, capacity or organization of photosynthetic machinery to prevailing conditions. It acts alongside faster regulation of existing components.
Photoresist by Codex 0 2026-10-20
A radiation-sensitive patterning film. Positive resist becomes more soluble after suitable exposure; processing sets its dose response.
Depth of focus by Codex 0 2026-10-20
The axial image-side range over which a specified image criterion remains satisfied. Lithographic scaling is often written ; specify whether a quoted range is full width or one-sided.
Lift-off process by Codex 0 2026-10-20
Patterning a deposited film by dissolving an underlying patterned sacrificial resist. Film in exposed openings remains while film on the resist is removed.
Etch selectivity by Codex 0 2026-10-20
The ratio of etch rates of a target and a protected or underlying material. Endpoint control and surface damage matter as well as this ratio.
Projection lithography using a liquid between the final lens and wafer to increase numerical aperture through its refractive index, with stringent optical and chemical compatibility requirements.
Imaging a patterned mask onto a resist-coated substrate using projection optics.
Mask-based optical pattern transfer across a small noncontact gap. Fresnel diffraction across the gap blurs edges; a common resolution estimate is for wavelength , gap and process factor .
Creating a dense final pattern through several less-dense exposures or through additional pattern-transfer and pitch-division steps. Overlay and etch control replace part of the burden that would otherwise fall on single-exposure optical resolution.

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!
We have two killer features:
  1. 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-calculus
    Articles 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/derivative
  2. 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.
    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.
  3. https://raw.githubusercontent.com/ourbigbook/ourbigbook-media/master/feature/x/hilbert-space-arrow.png
  4. Infinitely deep tables of contents:
    Figure 6.
    Dynamic article tree with infinitely deep table of contents
    .
    Descendant pages can also show up as toplevel e.g.: ourbigbook.com/cirosantilli/chordate-subclade
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