Biohazard sign | Wikipedia audio article
Channel: wikipedia tts
Date: 2019-06-06

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Hazard_symbol


00:00:56 1 List of common symbols
00:01:06 2 Generic warning symbol
00:02:06 3 Poison symbol
00:03:12 4 Ionizing radiation symbol
00:06:10 5 Biohazard symbol
00:06:35 5.1 History
00:08:02 5.2 Geometry
00:09:26 6 Chemical symbols
00:09:58 6.1 GHS symbols and statements
00:10:31 6.2 Europe
00:11:32 6.3 Canada
00:11:52 6.4 United States
00:12:46 7 Non-standard symbols
00:13:23 8 See also



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Voice name: en-US-Wavenet-A


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SUMMARY
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Hazard symbols or warning symbols are recognisable symbols designed to warn about hazardous or dangerous materials, locations, or objects, including electric currents, poisons, and radioactivity. The use of hazard symbols is often regulated by law and directed by standards organisations. Hazard symbols may appear with different colors, backgrounds, borders and supplemental information in order to specify the type of hazard and the level of threat (for example, toxicity classes).  Warning symbols are used in many places in lieu of or addition to written warnings as they are quickly recognized (faster than reading a written warning) and more commonly understood (the same symbol can be recognized as having the same meaning to speakers of different languages).