# Lab 7 Excel Execution

## Lab 7 Excel Execution

Hey do u guys know how to get the error of the slope?

k8
Guest

## Delta 2x and x

how do you get delta 2x and x and what is the SI unit for x????

guest 00
Guest

## Delta 2x n x

Delta2x was given .0005m & x=.00025m

Any1 know how to get the slope error and hair diameter etc.

cutiepie
Guest

## Laser wavelength

Were we suppose to record the wavelength from the laser itself or do we calculate it?
Thanx

Physics1
Guest

## Re: Lab 7 Excel Execution

The wavelength was noted in the manual, i think its like 632 nm or something around there. not sure though so double check, and convert it to meters

Hair diameter by diffraction can be found using the equation we formulated in the lab prep

Kathleen

Posts : 42
Join date : 2008-12-18

## Error in b

HOW DO WE CALCULATE THE ERROR IN B?

jsyz

Posts : 7
Join date : 2008-11-24

## Error of slope

How do we get error of a slope?

cutiepie
Guest

## B

I couldn't find the hair diameter from diffraction (B). I tried using the m*lambda=b(x/D) but it didn't work. As for the lab prep, we found something like b = D*lambda/s, but what is that 's'?

thanks

yikes
Guest

## Re: Lab 7 Excel Execution

what the heck is s for the hair diameter for diffraction?
the error for it is probably ( cant test it since i don't have s)
rel error = sqrt(((DeltaD/D)^2)+((Deltas/s)^2)) either that or
rel error = sqrt(((DeltaD/D)^2)+((Deltas/s)^2))*b

1
Guest

## Re: Lab 7 Excel Execution

Cant edit....
i am an idiot S is slope
so B=D*lamda/slope
error = sqrt(((DeltaD/D)^2)+((Deltas/s)^2))*b

1
Guest

## Re: Lab 7 Excel Execution

I have tried sooo many numbers and I can't get any slope errors to work on my excel sheet. Does anyone have any ideas what the error in slope should be?

!
Guest

## error of slope!

does anyone have any idea how to get error of slope??? im lost and its the only thing i need..plzzz help! thanks

guest_01
Guest

## error in slope

Professor,

I've been plugging in values for the slope for a while now. You mentioned above that if might turn green because one or two of the points aren't on the line. This is not the case for my graph, any other ideas as to why it would not turn green?

f
Guest

## error of Hair diameter from micrometer

hey guys, is there a forumula for this, or is it just a estimate? how did you guys figure an estimate?

thanks

:)
Guest

## Re: Lab 7 Excel Execution

wrote:hey guys, is there a forumula for this, or is it just a estimate? how did you guys figure an estimate?

thanks

.0001 or similar.

You can use the preliminary deviation from 0.

DJ

Posts : 28
Join date : 2009-03-17

## Re: Lab 7 Excel Execution

Can anybody help me with the questions regarding double slit interference. I am having a very difficult time understanding this.

helppp
Guest

## Re: Lab 7 Excel Execution

helppp wrote:Can anybody help me with the questions regarding double slit interference. I am having a very difficult time understanding this.

The answer should be in question five of the pre-lab.

DJ

Posts : 28
Join date : 2009-03-17

## Re: Lab 7 Excel Execution

Can anybody explain to me the reasoning behind the "many slits, goin toward the diffraction grating" on the last execution sheet?

Much appreciated!

Jimmy
Guest

## Re: Lab 7 Excel Execution

Sponsored content

Permissions in this forum:
You cannot reply to topics in this forum