Blue | Wikipedia audio article
Channel: wikipedia tts
Date: 2019-06-22

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Blue


00:02:27 1 Shades and variations
00:03:40 2 Etymology and linguistic differences
00:05:16 3 Science and nature
00:05:26 3.1 Optics
00:08:31 3.2 Pigments and dyes
00:10:08 3.3 Scientific natural standards
00:10:28 3.4 Why the sky and sea appear blue
00:11:52 3.5 Atmospheric perspective
00:12:35 3.6 Astronomy
00:13:06 3.7 Blue eyes
00:15:09 3.8 Lasers
00:16:04 4 History
00:16:14 4.1 In the ancient world
00:21:10 4.2 In the Byzantine Empire and the Islamic World
00:22:16 4.3 During the Middle Ages
00:27:10 4.4 In the European Renaissance
00:29:52 4.5 Blue and white porcelain
00:30:53 4.6 War of the blues – indigo versus woad
00:35:07 4.7 Blue uniform
00:40:10 4.8 Search for the perfect blue
00:43:05 4.9 Impressionist painters
00:46:15 4.10 Blue suit
00:49:05 4.11 In the 20th and 21st century
00:53:20 5 In world culture
00:55:51 5.1 As a national and international colour
00:57:55 5.2 Politics
01:01:33 5.3 Religion
01:03:27 5.4 Gender
01:03:47 5.5 Music
01:04:38 5.6 Transportation
01:05:31 5.7 Associations and sayings
01:09:00 6 Sports
01:09:29 6.1 The blues of antiquity
01:10:28 6.2 Association football
01:11:59 6.3 North American sporting leagues



Listening is a more natural way of learning, when compared to reading. Written language only began at around 3200 BC, but spoken language has existed long ago.

Learning by listening is a great way to:
- increases imagination and understanding
- improves your listening skills
- improves your own spoken accent
- learn while on the move
- reduce eye strain

Now learn the vast amount of general knowledge available on Wikipedia through audio (audio article). You could even learn subconsciously by playing the audio while you are sleeping! If you are planning to listen a lot, you could try using a bone conduction headphone, or a standard speaker instead of an earphone.

Listen on Google Assistant through Extra Audio:
https://assistant.google.com/services/invoke/uid/0000001a130b3f91
Other Wikipedia audio articles at:
https://www.youtube.com/results?search_query=wikipedia+tts
Upload your own Wikipedia articles through:
https://github.com/nodef/wikipedia-tts
Speaking Rate: 0.8459104052103416
Voice name: en-GB-Wavenet-A


"I cannot teach anybody anything, I can only make them think."
- Socrates


SUMMARY
=======
Blue is one of the three primary colours of pigments in painting and traditional colour theory, as well as in the RGB colour model. It lies between violet and green on the spectrum of visible light. The eye perceives blue when observing light with a dominant wavelength between approximately 450 and 495 nanometres.  Most blues contain a slight mixture of other colours; azure contains some green, while ultramarine contains some violet. The clear daytime sky and the deep sea appear blue because of an optical effect known as Rayleigh scattering.  An optical effect called Tyndall scattering explains blue eyes. Distant objects appear more blue because of another optical effect called aerial perspective.
Blue has been an important colour in art and decoration since ancient times. The semi-precious stone lapis lazuli was used in ancient Egypt for jewellery and ornament and later, in the Renaissance, to make the pigment ultramarine, the most expensive of all pigments. In the eighth century Chinese artists used cobalt blue to colour fine blue and white porcelain. In the Middle Ages, European artists used it in the windows of cathedrals. Europeans wore clothing coloured with the vegetable dye woad until it was replaced by the finer indigo from America. In the 19th century, synthetic blue dyes and pigments gradually replaced mineral pigments and synthetic dyes. Dark blue became a common colour for military uniforms and later, in the late 20th century, for business suits. Because blue has commonly been associated with harmony, it was chosen as the colour of the flags of the United Nations and the European Union.Surveys in the US and Europe show that blue is the colour most commonly associated with harmony, faithfulness, confidence, distance, infinity, the imagination, cold, and sometimes with sadness. In US and European public opinion polls it is the most popular colour, chosen by almost half of both men and women as their favourite colour. The same surveys also showed that blue was the colour most associated with the masculine, just ahead of black, and was also the colour most associated with intelligence, knowledge, calm and concentration.