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Related Concept Videos

Photosystems01:32

Photosystems

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Photosystems are multiprotein complexes that form the functional units of photosynthesis in plants, algae, and cyanobacteria. They are found embedded in the membrane of tiny sac-like structures called thylakoids placed inside the chloroplast.
Functioning of Photosystems
Photosystems contain many pigment molecules, such as chlorophylls and carotenoids, arranged in a particular organization across two domains — the antenna complex and the reaction center. The main aim of the pigment...
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The Photochemical Reaction Center01:29

The Photochemical Reaction Center

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Reaction centers are pigment-protein complexes that initiate energy conversion from photons to chemical entities. Therefore, photochemical reaction center is a more appropriate term that describes these complexes. The Nobel laureates Robert Emerson and William Arnold provided the first experimental evidence of photochemical reaction centers by demonstrating the participation of nearly 2,500 chlorophyll molecules for the release of just one molecule of oxygen. Despite thousands of photosynthetic...
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Photosystem II01:22

Photosystem II

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The multi-protein complex photosystem II (PS II) harvests photons and transfers their energy through its bound pigments to its reaction center, and ultimately to photosystem I (PSI) through the electron transport chain. The pigments responsible for caputirng the light energy in photosystems include chlorophyll a, chlorophyll b, and carotenoids.
The pigment molecules are arranged across  two photosystem domains — the antenna complex and the reaction center. The main aim of the pigment...
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Photosystem I01:27

Photosystem I

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Although structurally similar to photosystem II (PSII), photosystem I (PSI) is has a different electron supplier and electron acceptor.
Both these photosystems work in concert. An excited electron from PSII is relayed to PSI via an electron transport chain in the thylakoid membrane of the chloroplast, which is comprised of the carrier molecule plastoquinone, the dual-protein cytochrome complex, and plastocyanin. As electrons move between PSII and PSI, they lose energy and must be re-energized...
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Photoelectric Effect02:26

Photoelectric Effect

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When light of a particular wavelength strikes a metal surface, electrons are emitted. This is called the photoelectric effect. The minimum frequency of light that can cause such emission of electrons is called the threshold frequency, which is specific to the metal. Light with a frequency lower than the threshold frequency, even if it is of high intensity, cannot initiate the emission of electrons. However, when the frequency is higher than the threshold value, the number of electrons ejected...
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Focusing of Light in the Eye01:16

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Light rays enter the eye through the cornea, a transparent dome-shaped tissue that is the eye's outermost layer. The cornea bends or refracts, light rays traveling to the pupil. The shape of the cornea determines how much of the light is bent and whether the image will be focused correctly on the retina at the back of the eye. Once the light has passed through both refraction layers, it converges into a single focal point onto a small area. This is where photoreceptors start transforming...
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Effect of cyclamate sodium, saccharin sodium and stevioside on arginine-induced insulin and glucagon secretion in the isolated perfused rat pancreas.

Hormone and metabolic research = Hormon- und Stoffwechselforschung = Hormones et metabolisme·1980
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Using Visual and Narrative Methods to Achieve Fair Process in Clinical Care
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Involvement through photography.

J Takai1

  • 1Photo Company Co., Ltd., 1f, Sunporto, 560 Tsurumakicho, Waseda, Shinjuku-ku, Tokyo, Japan.

Annals of the ICRP
|January 21, 2017
PubMed
Summary

Photography plays a vital role in documenting community life and engagement in Suetsugi village. This exploration examines the impact of photographic practice five years after the Fukushima Daiichi nuclear disaster.

Area of Science:

  • Social Sciences
  • Media Studies
  • Community Psychology

Background:

  • The Fukushima Daiichi nuclear disaster significantly impacted communities, including Suetsugi village.
  • Photographic documentation offers a unique lens to observe and engage with affected populations.
  • The long-term social and psychological effects of such disasters on community life are profound.

Purpose of the Study:

  • To explore the role and meaning of photography in the context of Suetsugi village life.
  • To understand the photographer's involvement in the community through their photographic practice.
  • To reflect on the significance of visual documentation five years post-Fukushima Daiichi nuclear accident.

Main Methods:

  • Qualitative research through regular photographic visits to Suetsugi village.
Keywords:
InvisibleInvolvementLivingMindOutsiderPhotography

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  • Engaging with residents by sharing printed photographs.
  • Reflective analysis of the photographer's experiences and observations.

    • Main Results:

    • Photography serves as a tool for connection and dialogue between the photographer and Suetsugi residents.
    • The act of photographing and sharing images facilitates a deeper involvement in the community's life.
    • Visual records provide insights into the community's resilience and adaptation post-disaster.

    Conclusions:

    • Photography can be a meaningful way to participate in and understand the life of a community affected by disaster.
    • The practice fosters mutual understanding and shared experience, contributing to community well-being.
    • Long-term photographic engagement offers valuable perspectives on recovery and resilience in post-nuclear accident contexts.