3.12
Recall some of the uses of electromagnetic radiations, including:
Radio waves: broadcasting and communications
Microwaves: cooking and satellite transmissions
Infrared: heaters and night vision equipment
Visible light: optical fibres and photography
Ultraviolet: fluorescent lamps
X-rays: observing the internal structure of objects and materials and medical applications
Gamma rays: sterilising food and medical equipment
Radio waves: broadcasting and communications
Microwaves: cooking and satellite transmissions
Infrared: heaters and night vision equipment
Visible light: optical fibres and photography
Ultraviolet: fluorescent lamps
X-rays: observing the internal structure of objects and materials and medical applications
Gamma rays: sterilising food and medical equipment
(Source: http://static.newworldencyclopedia.org/thumb/9/99/EM_Spectrum3-new.jpg/500px-EM_Spectrum3-new.jpg)
posted by qing at
19:25
3 Comments:
Great work - well done for citing your source
But please do this!
• Dashboard→Settings→Comments→Turn of word verification for comments
And not sure why your blog is in French!
I turned off word verification just now and I have no idea why my blog is in French - trying to switch it to English now
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