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8C10.u2 - Accretion Disk

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​8C10.u2 - Accretion Disk

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SelectSelected
Title8C10.u2 - Accretion Disk
Objective

Demonstrate an accretion disk.​

StatusAvailable
Assembly Instructions

Instructions
Accretion can be represented using a large mass, marbles, and a rubber diaphragm stretched across a hole in a wood frame. Marbles are placed at the center of the diaphragm representing the matter that will be captured by another star. The large mass which represents the star is placed on the edge of the rubber diaphragm and pushed into a spiral trajectory. As the large mass gets closer to the center, the marbles get pulled into the spiral trajectory. In a very short time, the large mass is stationary in the center, and the marbles are spiraling around it until they eventually come to rest around the larger mass. ​

Setup Time20
Operation Time10
Preview Time10
Operation Instructions
ExportableNo
Demo on DimeNo
PIRA 200Yes
Export Instructions (if different)
HazardsNone
Analysis/Information
Category8 Astronomy
Subcategory8C - Cosmology
Keywordsspiral galaxy, gravitational potential well, gravity well, black hole, accretion
Construction Information
 
Equipment TitleUse SHIFT+ENTER to open the menu (new window).
  
QuantityUse SHIFT+ENTER to open the menu (new window).
  
rubber diaphram mounted in wooden base
1
large mass for accretion disk
1
marbles light colored
50
accretion disk legs
4
camera - b&w
1
bench clamp
1
bench rod
1
extension cord
1
export setup - export accretion disk, large mass, marbles
1