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Results 15131 - 15140 of 15328 for lighting
  • Photovoltaics - Multijunction Cells
    Article - 8 Jan 2002
    Most PV's use single junctions which limit the amount of energy which can be converted into electricity. One way top get around this is to use two or more differenet cells or multijunction cells. How...
  • Friction Stir Welding
    Article - 7 Jan 2002
    Friction stir welding is a recent modification on friction welding. It is suited to aluminium, magnesium and other metals and can join dissimilar materials. Advantages over fusion welding are, no...
  • Photovoltaic Materials - Amorphous Silicon
    Article - 7 Jan 2002
    Amorphous silicon is reviewed as a photovoltaic material. Reasons why it is suited to the application, how it works and how it is applied in solar cells are covered.
  • Gallium Arsenide - as a Photovoltaic Material
    Article - 4 Jan 2002
    Gallium arsenide is suited to use in solar cells due to its 1.43eV band gap, high absorptivity, insensitivity to heat and resistance to radiation damage. Drawbacks, opprtunities, high-efficiency...
  • Photovoltaic Cells and Arrays
    Article - 4 Jan 2002
    The photovoltaic or solar cell is the basic building block of a photovoltaic system. Several cells make up a module and several modules make up an array. This article explains why arrays are needed to...
  • Photovoltaics (PV) - How They Work
    Article - 4 Jan 2002
    This article discusses photovaltaics (PV) and how they work.
  • Stainless Steel - Design Considerations
    Article - 2 Jan 2002
    Properties such as high thermal expansion, low thermal conductivity and low machinability compared to other metals need to be taken into account when designing with stainless steels. Many of these...
  • Superconducting Magnetic Energy Storage (SMES) Systems
    Article - 17 Dec 2001
    Superconducting Magnetic Storage Energy Systems store energy within a magnet and release it within a fraction of a cycle in the event of a loss of line power. How they work, how fast they recharge,...
  • Photovoltaic Systems - Estimating Size Requirements
    Article - 14 Dec 2001
    Have you ever thought about installing a solar electricity system and not known how big a system you require? This article takes you through estimating your power requirements and includes examples.
  • Retread Tyre FAQs (Frequently Asked Questions)
    Article - 28 Nov 2001
    All the questions you wanted to ask about retread tyres are answered. Aspects like safety, manufacturing standards, which types of tyres can be retreaded, can they be used at highway speeds, life...

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The primary distinction between graphene-based batteries and solid-state batteries lies in the composition of either electrode. Although the cathode is commonly changed, carbon allotropes can also be employed in fabricating anodes.

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