arts 464
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- performing arts 13
- portals 1
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- associations 3
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- cartoons 13
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- cinema 17

data processing 50
- Internet 1
- robotics 1
- programming 6
- software 8
- multi-media 3
- images 7
- formation 1
- freeware 2
- informations and media 6
- artificial intelligence 8
- associations and clubs 2
- numerical imagery 1
- material 2
- parallel calculation 1
- discussions 1

house 78
- garden 9
- cook 22
- do-it-yourself 6
- guides 2
- information for the consumers 7
- decoration 23
- informations and medias 9

games 46
- wargames 1
- games 15
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- Internet 7
- gambling 2
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company 95
- policy 1
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- relations 1
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- people and communities 4
- associations and organizations 3
- work 16
- nature and environment 7
- soldier 1
- institutions and administrations 4
- drugs 1
- people 3
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- virtual communities 2
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- alternative cultures 10

sciences 114
- software 4
- agriculture 9
- sciences of the ground 3
- biology 7
- conferences 1
- astronomy 4
- chemistry 4
- physics 2
- environment 6
- research centers 3
- technology 29
- institutions 2
- teaching and formation 10
- social sciences 10
- science and company 6
- informations and medias 9
- methods and techniques 5

sports 165
- balls and balloons 2
- watery 3
- handicaps 1
- shooting 2
- mountain 1
- fights 2
- extremes 6
- balls 18
- artistic 2
- air 41
- shoes 2
- force 1
- slide 1
- athletics 4
- events 8
- drive 33
- informations and medias 8
- teaching and formation 2
- mechanics 9
- fish 3
- cycling 16

leisures 302
- pets 116
- humour 10
- evaluation of photographs 10
- collections 24
- hobbies 74
- scouting 1
- alive history 42
- kites 1
- celebrities 24

tourism 109
- travel 68
- naturism 11
- amusement parks 15
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- holiday camps 8
- lodging and restoration 6

shops on line 84
- entertainment 2
- sports 2
- gastronomy and food 2
- arts 3
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- animals 25
- jewellery and clock industry 1
- wholesalers 2
- electronics 2
- flowers and plants 2
- automobiles 11
- gifts 2
- health 1
- music 3
- house and garden 2
- buying associations 1
- niche 1
- photographs 1
- clothing 10
- auction sales 2
- regional products 1

formation 65
- associations 21
- guides 3
- resources 7
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news 239
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- radio 4
- journalism 11
- at the top 24
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- television 3
- alternative media 83

references 80
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internet 146
- website creation 36
- search engine and directory 21
- tools webmaster 22
- promotion and affiliation 67

adult 69
- weblogs 20
- other 10
- sex shop 1
- gay 13
- amateurs 22
- hetero hard 1
- dating 2

sciences astronomy

GeoDirectory

Speed of light

Speed of light *

From general relativity we know that only in local inertial frames does the measured speed of light equals the nominal speed of light (299792.458km/sec).

Astronomy in service of islam

Astronomy in service of islam

Moonsighting, islamic calendar, prayer times, and qibla direction

Tatasurya

Tatasurya

Planets, science, refrencess

Wcs - the home of webcamscheinern

Wcs - the home of webcamscheinern

Wcs is a software for fast polaralignment of astronomical mounts. you nail your alignment within 20 minutes!