|
Size: 1456
Comment:
|
Size: 1747
Comment:
|
| Deletions are marked like this. | Additions are marked like this. |
| Line 15: | Line 15: |
| Show students a 1 lb mass and a 1 kg mass. | Compare a 1 lb mass to a 1 kg mass. |
| Line 19: | Line 19: |
| ||1 lb Mass||ME, Bay A3, Shelf #1|| || ||1 kg Mass||ME, Bay B1, Shelf #3|| || |
||1 lb Mass||ME, Bay [:MechanicsCabinetBayA3:A3], Shelf #1|| || ||1 kg Mass||ME, Bay [:MechanicsCabinetBayB1:B1], Shelf #3|| || ||Double Pan Balance||ME, Bay [:MechanicsCabinetBayB2:B2], Shelf #2|| || |
| Line 24: | Line 24: |
| A. '''''This demonstration requires a minimum 24 hour notice.''''' * '''''This demonstration requires LN2''''' * '''''Back-to-Back lectures is NOT possible; We'll do one lecture one day and the other the next day.''''' |
|
| Line 31: | Line 27: |
| 1. Make a Setup check list. 1. ... |
1. N/A |
| Line 35: | Line 30: |
| 1. List any Warnings.... 1. Demonstration may require practice. |
1. N/A |
| Line 41: | Line 35: |
| Insert description of demonstration, how is the demonstration preformed. | A 1 lb mass and a 1 kg mass is set out for the students to compare. One can use a double pan balance to compare there mass. |
| Line 43: | Line 37: |
| ||attachment other photos||attachment other photos|| ||attachment other photos||attachment other photos|| |
The SI unit of mass, the kilogram, is defined as the mass of a specific platinum iridium alloy cylinder kept at the International Bureau of Weights and Measures at Sevres, France. This mass standard was established in 1901, and there has been no change since that time because platinum iridium is an unusually stable alloy. The Sevres cylinder is 3.9 centimeters in diameter and 3.9 centimeters in height. A duplicate is kept at the National Bureau of Standards in Gaithersburg, Md. ||attachment:1LBMass-01-250.jpg||attachment:KGMass-02-250.jpg|| |
[:PiraScheme#Mechanics: Table of Mechanics Demonstration] |
[:MEEquipmentList: List of Mechanics Equipment & Supplies] |
[:Demonstrations:Lecture Demonstrations] |
Standard Masses, 1A10.20
Location:
Cabinet: [:MechanicsCabinet:Mechanic (ME)]
Bay: [:MechanicsCabinetBayA3:(A3)]
Shelf: #1
attachment:StandardMasses-03-400.jpg
Description:
Compare a 1 lb mass to a 1 kg mass.
Equipment |
Location |
ID Number |
|
|
|
1 lb Mass |
ME, Bay [:MechanicsCabinetBayA3:A3], Shelf #1 |
|
1 kg Mass |
ME, Bay [:MechanicsCabinetBayB1:B1], Shelf #3 |
|
Double Pan Balance |
ME, Bay [:MechanicsCabinetBayB2:B2], Shelf #2 |
|
Important Setup Notes:
Setup:
- N/A
Cautions, Warnings, or Safety Concerns:
- N/A
Demonstration:
A 1 lb mass and a 1 kg mass is set out for the students to compare. One can use a double pan balance to compare there mass.
The SI unit of mass, the kilogram, is defined as the mass of a specific platinum iridium alloy cylinder kept at the International Bureau of Weights and Measures at Sevres, France. This mass standard was established in 1901, and there has been no change since that time because platinum iridium is an unusually stable alloy. The Sevres cylinder is 3.9 centimeters in diameter and 3.9 centimeters in height. A duplicate is kept at the National Bureau of Standards in Gaithersburg, Md.
attachment:1LBMass-01-250.jpg |
attachment:KGMass-02-250.jpg |
References:
- List any references
[:Instructional:Home]