# Physics307L:People/Lancaster/Notebook/071008

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--Michael T. Lancaster 16:45, 8 October 2007 (CDT)

# Planck's constant

## Part A

Blue-

Initial voltage- 9.490

Time for voltage to accumulate:

Blue

100% transmission - 1.09 s 1.78s

80%- 1.66 s 2.34s

60% - 2.65 s 2.30s

40% - 3.94 s 2.56s

20% - 4.72 5.81s

Green

100% transmission - 3.22 s 3.19s

80% - 3.34s 4.11s

60% - 5.96s 8.72s

40% - 9.50s 12.28s

20% - 16.72s 18.4s

## Part B

Yellow (w/ filter) - .723V .722V

Green (w/ green filter) - .856V .853V

Blue/Green - 1.501V 1.501V

Blue - 1.716V 1.713V

Blue/violet - 2.063V 2.064V

## Experiment 2

We are both taking two sets of data for each order

First Order Volts Average Volts
Yellow(w/yellow filter) .716 .723 .721 .722 .720
Green(w/green filter) .856 .854 V .853 V .854 V .854
Blue/(green side) 1.502 1.501 V 1.516 V 1.515 V 1.507
Blue 1.71 1.718 1.712 V 1.716 V 1.714
Blue/(violet side) 2.07 2.069 V 2.071 V 2.071 V 2.07
Second Order Volts Average Volts
Yellow(w/yellow filter) .773 .764 .768 .770 .770
Green(w/green filter) 1.255 1.268 1.260 1.263 1.261
Blue/(green side) 1.557 1.559 1.557 1.558 1.558
Blue 1.734 1.728 1.730 1.731 1.731
Blue/(violet side) 2.066 2.061 2.064 2.064