Gravitational Lensing - Revision history

imported>Stwikiadmin at 14:15, 6 April 2016

2016-04-06T14:15:34Z

← Older revision		Revision as of 14:15, 6 April 2016
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	~~'''''WRITEUP UNDER CONSTRUCTION'''''~~		This is an thought-provoking demonstration on how we can identify black holes in outer space. It does require some background knowledge on black holes for the participant, so it works best with an older audience.

	== Materials ==		== Materials ==

imported>Stwikiadmin at 14:14, 6 April 2016

2016-04-06T14:14:03Z

← Older revision		Revision as of 14:14, 6 April 2016
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	{\| class="wikitable" style="color:black; background-color:#ddd; margin-left: auto; float:right"		{\| class="wikitable" style="color:black; background-color:#ddd; margin-left: auto; float:right"
	\| [[Astronomy]]:		\| [[Astronomy]]:
	\| Gravitational Lensing		\| Gravitational Lensing, Black Holes
	\|-		\|-
	\| Grade Range:		\| Grade Range:
	\| [[High School]]		\| [[Middle School]], [[High School]]
	\|-		\|-
	\| Format:		\| Format:
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	* Wine Glass Bottoms		* Wine Glass Bottoms
			* Gravitational Lensing Images

	== Safety Precautions ==		== Safety Precautions ==
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	== Demonstration ==		== Demonstration ==

			# Have students pick up the wine glass bottoms and try looking through them at different objects in the room. Can they see through the center of it?
	1. ~~Steps for~~ the ~~demonstration.~~		# Instead of trying to look through the center, have them try to identify objects by looking at the warped image around the center. What do they notice about the warped image?
			# Have students compare what they are seeing to the images you have. Does the effect look similar?
	2. ~~Be sure to clarify on steps~~ about ~~any safety equipment needed.~~

	~~3. Make sure steps can be understood by a first-time reader~~.


	== Why This Works ==		== Why This Works ==

	~~===Short Explanation===~~		''Gravitational Lensing'' is an effect that we see around massive stellar objects, such as black holes. If we are trying to look at a black hole, we won't actually see it, since it doesn't emit any light, and traps any light that comes towards it. However, we ''can'' see stars and other stellar objects that are ''behind'' the black hole. Some of the light that is emitted from the star is far enough away from the black hole that it will not be pulled into it. However, the force of gravity that the black hole has will still warp the light, and cause it to curve around the black hole. This warped light we can see with telescopes, and based on how much it is warped we can determine the approximate size of the black hole, and the distance it is from the star behind it.
	~~This~~ is ~~where you would provide a basic~~, ~~easy-to-understand explanation of the demonstration~~. ~~Try not~~ to ~~use too much "Science Jargon"~~, and ~~if needed add~~ any ~~explanation tips~~, ~~like comparing~~ the ~~demo to something kids are familiar with~~.

	~~===Full Explanation===~~
	~~This~~ is ~~where you~~ will ~~explain~~ the ~~demonstration in full~~, and ~~provide all additional information that pertains~~ to the ~~demo~~. ~~Unlike the short explanation above~~, ~~this should be worded so someone who~~ is ~~familiar with~~ the ~~topics might understand it. If needed~~, ~~you can provide equations~~ and ~~citations for additional sources of information on~~ the ~~topic. This~~ is ~~also where you will find some answers for trickier questions, such as "How does a plane fly upside-down?" for~~ the ~~Bernoulli's Principle demo~~. ~~If you want to add a floating box for equations, copy the following:~~

	~~{\| class="wikitable" style="color:~~black~~; background-color:#ddd; text-align:~~ center~~; margin: auto"~~		When we look through the wine glass bottoms, we cannot see directly through the center of them, because it is too foggy. This is what we can imagine to be our black hole, because we cannot identify it directly. However, we can see the light coming from around the center. The images we see are really warped though, and some even wrap fully around the outside of the center foggy spot. This is what the gravitational lensing effect looks like to us; the light from the star or object behind the black hole is distorted around it, and can even wrap an entire image around the black hole. You may even notice the doubling of an image through this warped area!
	~~\| This will give you~~
	~~\| a floating box~~.
	\|-
	\| The ~~box will be~~
	~~\| centered for you~~.
	\|}

	== Additional Information ==		== Additional Information ==

	* ~~Any extra tidbits that do not fit into other sections~~		* 01101000 01110100 01110100 01110000 01110011 00111010 00101111 00101111 01110111 01101000 01100001 01110100 00101101 01101001 01100110 00101110 01111000 01101011 01100011 01100100 00101110 01100011 01101111 01101101 00101111 00110001 00110011 00110110 00101111
	* This demonstration is a part of the (insert [[Stage Show]] here)

imported>Stwikiadmin at 15:55, 28 March 2016

2016-03-28T15:55:25Z

← Older revision		Revision as of 15:55, 28 March 2016
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	This space is intended to describe the demonstration that is here. Please use this space to describe in short the demonstration, making sure to mention here if it will require any additional safety equipment or how easily it can be adjusted for varied grade levels.		'''''WRITEUP UNDER CONSTRUCTION'''''
	~~Use this page as a base layout for editing the wiki. Feel free to copy the layout onto other pages, and to put the content as needed into the page.~~

	== Materials ==		== Materials ==

imported>Stwikiadmin: Created page with "{| class="wikitable" style="color:black; background-color:#ddd; margin-left: auto; float:right" | Astronomy: | Gravitational Lensing |- | Grade Range: | High School |- | ..."

2016-03-28T15:55:04Z

Created page with "{| class="wikitable" style="color:black; background-color:#ddd; margin-left: auto; float:right" | Astronomy: | Gravitational Lensing |- | Grade Range: | High School |- | ..."

New page

{| class="wikitable" style="color:black; background-color:#ddd; margin-left: auto; float:right"
| [[Astronomy]]:
| Gravitational Lensing
|-
| Grade Range:
| [[High School]]
|-
| Format:
| [[Hands-on]]
|}

This space is intended to describe the demonstration that is here. Please use this space to describe in short the demonstration, making sure to mention here if it will require any additional safety equipment or how easily it can be adjusted for varied grade levels.
Use this page as a base layout for editing the wiki. Feel free to copy the layout onto other pages, and to put the content as needed into the page.

== Materials ==

* Wine Glass Bottoms

== Safety Precautions ==

Please read the General Safety section of the [[Demonstration Safety]] page before performing this demonstration.

== Demonstration ==

1. Steps for the demonstration.

2. Be sure to clarify on steps about any safety equipment needed.

3. Make sure steps can be understood by a first-time reader.

== Why This Works ==

===Short Explanation===
This is where you would provide a basic, easy-to-understand explanation of the demonstration. Try not to use too much "Science Jargon", and if needed add any explanation tips, like comparing the demo to something kids are familiar with.

===Full Explanation===
This is where you will explain the demonstration in full, and provide all additional information that pertains to the demo. Unlike the short explanation above, this should be worded so someone who is familiar with the topics might understand it. If needed, you can provide equations and citations for additional sources of information on the topic. This is also where you will find some answers for trickier questions, such as "How does a plane fly upside-down?" for the Bernoulli's Principle demo. If you want to add a floating box for equations, copy the following:

{| class="wikitable" style="color:black; background-color:#ddd; text-align: center; margin: auto"
| This will give you
| a floating box.
|-
| The box will be
| centered for you.
|}

== Additional Information ==

* Any extra tidbits that do not fit into other sections
* This demonstration is a part of the (insert [[Stage Show]] here)