User:HHahn

Babel user information
nl-N Deze gebruiker heeft het Nederlands als moedertaal. de-3 Dieser Benutzer beherrscht Deutsch auf hohem Niveau. en-3 This user has advanced knowledge of English. fr-1 Cet utilisateur dispose de connaissances de base en français.
Users by language

Name:  Ir. H. Hahn User name:  HHahn Year and place of birth:  1946, Apeldoorn (NL) Sex:  male Residence:  Netherlands (Eindhoven region) Education: MSc (“Ir.”) in Applied Physics (1975, TU Eindhoven (NL)) Nationality:  Netherlands

Prof. experience:  developing laboratory instrumentation developing software writing documentation (nl, en, de) translating documentation (en, de → nl) developing websites Languages: Dutch: native OP VL      German: good OP VL      English: good OP VL      French: basic   OP VL      See also:  Wikimedia Commons OP VL      Commons images I started

Helpful links:

• Special:CategoryTree

My contributions

Photos and drawings

Click here for diagrammes, for other pictures and for License-free contributions from other websites.

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  Breda, Bijster
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  Eindhoven, Evoluon
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  Eindhoven, Heuvelgalerie shopping centre
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  Eindhoven, High-Tech Campus
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  Eindhoven, Water tower
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  Veldhoven, ASML Head office
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  Progressive glass
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  Cylindrical magnifying glass
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  Parallax with transparent ruler
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  Peugeot 107
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  Fresnel magnifying glass
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  Máxima Medisch Centrum, loc. Veldhoven
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  Diaphragm strain gauge
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  Toric lens surface as a "cap" from a torus
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  Eindhoven/Veldhoven, Hovenring (1)
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  Eindhoven/Veldhoven, Hovenring (2)
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  Eindhoven/Veldhoven, Hovenring (3)

Diagrammes

Click here for photos, for other pictures and for License-free contributions from other websites. Each diagramme has a short description in both English and Dutch (and sometimes German), including symbols' legenda.

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  Achromaat
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  Apochromaat
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  Beam splitter
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  Block resistance
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  Chromatic aberration
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  Diagram Argunov-Cassegrain reflector
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  Diagram Cassegrain reflector
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  Diagram Gregorian reflector
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  Diagram Gregory-Maksutov reflector
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  Diagram Klevtsov-Cassegrain reflector
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  Diagram Kutter reflector
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  Diagram Maksutov reflector
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  Diagram Newton reflector
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  Diagram Ritchey-Chretien reflector
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  Diagram Rutten-Maksutov (Rumak) reflector
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  Diagram Schmidt-Cassegrain reflector
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  Double lens
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  Eyepiece magnification
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  Hartmann-Shack sensor
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  Hartman-Shack sensor, single lenslet
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  Lambert's cosine law
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  Aperture sizes
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  Types of lenses
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  Imaging through a lens
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  Luminosty curve (redrawn)
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  Negative lens
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  Positive lens
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  Reflection at a non-coated surface
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  Reflection at a coated surface
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  Retrofocus design
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  Scheimpflug principle (intersecting planes)
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  Scheimpflug principle (parallel planes)
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  Sight defects
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  Slide projector
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  Spherical aberration
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  Stellar parallax due to earth's rotation around sun
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  Telephoto design
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  Thick lens
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  Transverse magnification
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  Each lens has two focal points
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  Luminosity curve (based on table)

Other pictures

Click here for photos. for diagrammes and for License-free contributions from other websites.

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  NL flag, transparent for 100 ms every 2 s, with US and UK flags behind it (as an icon symbolising anglicisms)
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  NL flag, transparent for 100 ms every 2 s, with DE flag behind it (as an icon symbolising germanisms)

License-free pictures from other websites

Click here for photos, for diagrammes and for other pictures.

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  Active oprics (from ESO)
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  European Extremely Large Telescope (from ESO)
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  Arial view of Paranal observatory (from ESO)
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  Logo Máxima Medisch Centrum Eindhoven/Veldhoven (from MMC)
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  Logo Catharinaziekenhuis Eindhoven (from Cath.-zkhs Ehv)
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  Old logo Catharinaziekenhuis Eindhoven (from www.ziekenhuis.nl)