Considering all the ways heat can transfer, conduction, convection and radiation...radiation is the most mysterious. You can't see waves of energy...can you? We can feel the heat, but we can't see it. So, how do we understand something we can't see? All particles move and when they move they make heat...except for those particles that are at absolute zero, which is a theoretical state of being because scientists haven't discovered absolute zero yet...And some particles move more than others, like, really insane amounts of vibrations and create massive amounts of energy (THE SUN). This variety of heated, jiggling particles travel through space at different speeds, because some are slower than others, some faster than others. The pattern of travel has been discovered to be via "waves". Long waves are slower moving, faster waves are intense and can travel great distances very quickly. If you look at the table you will see names for the different wave speeds. Radio waves are slow and large...some have been measured to be as high as mountains, but may not make it over the mountain...microwaves are a little shorter and we know if we capture microwaves and put them in a box we can zap food and liquids, pizza and leftovers and make them really hot. Infrared waves are less wide and we can feel infrared heat in our cars in the summer! We can see visible light waves of energy. Thank goodness because the world would be a boring place without color....then we get to the ultraviolet waves, this is when the waves start getting intense. Ultraviolet waves can enter our skin and give us skin cancers. X-rays are helpful because this energy wave can go into our bodies, we can capture pictures of broken bones and tumors. Finally, the bad boys of energy waves: the gamma waves. These wavelengths are so close together and so intense they will go right through our bodies and leave us vaporized! I'm not so sure you all read all those words, so I'll use some pictorial examples to show you how we can "see" radiation. 1. Radio Waves 2. Microwaves 3. Infrared waves 4. Ultraviolet waves 5. X-rays 6. Gamma rays I told you so! Radiation is the most mysterious of all thermal energy transfers. Possibly the most useful too of all the thermal energy transfers; conduction, convection and radiation!!
9 Comments
OLIVER ROPER
3/13/2019 03:54:55 pm
First! That alien was in Fortnite season LIT negative1. Hehehe hehehe
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Michael mandaa
3/13/2019 08:46:59 pm
This boi is a try hard and if the butterfly was in the head, wouldn’t dat dude die
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Alice Watson
3/13/2019 03:59:51 pm
I love the picture of the melting chocolate bunny!
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Ryker Bement
3/13/2019 05:42:39 pm
It is fun to watch the thing of the dog.
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Aaron
3/13/2019 06:14:52 pm
Poor bunny 😥
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Sebastian Lei
3/13/2019 08:13:27 pm
the bunny thing is satisfying to watch 😵
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kajetan
3/13/2019 08:18:51 pm
that dog looks like he is a lava dog 💥💥💥💥💥
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Miriana Sakamoto
3/13/2019 09:51:43 pm
This is so cool. Everything it says about different types of energy.It makes so much sense. Radiation is the most mysterious of all types of heat transfer. By the way, that song we listened to in science was kind of annoying, and it gave me a headache.
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6/21/2022 08:10:53 am
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Mrs. TaylorI love science! Everything about the world is interesting and never boring. I love to study plants, animals, insects, and people. My favorite subjects are my students who are the most unique organisms on the planet! Categories |