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"Nothing in life is to be feared, it is only to be understood." ..."Marie Curie 1867-1934, Polish born French Physicist, Twice Nobel Prize Winner- Physics and Chemistry)"
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Author Topic: Vernier  (Read 524719 times)
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Fu-Kwun Hwang
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Reply #30 on: October 17, 2007, 08:33:07 am »

When the rotating part rotate one complete cycle, it move 0.5 mm distance (the main scale increase by 0.5mm).
And there are 50 divisions for one complete cycle. So the smaller scale (one division) is 0.5/50=0.01 mm
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yasmine
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Reply #31 on: October 18, 2007, 06:36:48 am » posted from:Alexandria,Al Iskandariyah,Egypt

 ;Dthanks alot for ur reply but what about vernier calipar scale value Roll Eyes
« Last Edit: October 18, 2007, 06:38:53 am by yasmine » Logged
Fu-Kwun Hwang
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Reply #32 on: October 18, 2007, 04:30:31 pm » posted from:Taipei,T'ai-pei,Taiwan

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The total length for the scale of the moving part is 19mm.
And it was divided by 10 divisions, so each division is 1.9mm which is less than two units in the main scale by 2.0-1.9mm=0.1mm.

Think of the above system in the following way:
Assume every 2.0 mm in the main part is replaced by a 2.0mm block.
And every 1 division in the moving part is replace by a 1.9mm block.
If the first block of both part are aligned at the right, then there is a 0.1 mm displacement at the left.
If the second block of both part are aligned at the right, then there is a 0.2mm displacement at the left.
...
I hope you can understand what I mean.
Anyway, I am going to create another java applet to show it.

Drag the slider to change the alignment points. Assume the top block is 2.0mm each, and the lower one is 1.9mm each (total length =1.9mm*10=19mm)



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yasmine
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Reply #33 on: October 18, 2007, 10:05:48 pm » posted from:Alexandria,Al Iskandariyah,Egypt

thank u for ur great Information and ur helps ,so if u know good site for measurment I should be grateful Cheesy
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Reply #34 on: October 28, 2007, 09:26:26 pm »

 Huh Roll Eyes
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may
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Reply #35 on: September 02, 2008, 02:40:03 pm »

 thank you for your simulation Grin
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lookang
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Reply #36 on: September 03, 2008, 10:21:07 am » posted from:Singapore,,Singapore

thank u for ur great Information and ur helps ,so if u know good site for measurment I should be grateful Cheesy

measurements?

well, i have been posting in my own forum, all the good resources i come across Smiley
key in a search "measurements"

http://66.7.205.91/~lookangc/index.php?topic=29.msg1466#msg1466

you can find vectors, Vectors Addition, many interactive learning tools i found all over the net.

need to register to view ! Sad

« Last Edit: September 03, 2008, 10:24:28 am by lookang » Logged
erc8888
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Reply #37 on: October 10, 2008, 02:01:23 am »

Thx for the great program.  I'm in my first semester taking electromechanical classes at a tech school and we have had limited time in lab to get familiar with calipers and vernier scales.  This program really helped reinforce what I learned in lab and it really showed come test time.  thx again
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lookang
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Reply #38 on: October 10, 2008, 04:55:02 am »

there is a similar one made in EJS over http://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=684.msg2452#msg2452. Made/customised with many thanks to Prof Hwang Smiley


enjoy

http://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=684.msg2452#msg2452
« Last Edit: October 10, 2008, 04:58:09 am by lookang » Logged
mnarat
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Reply #39 on: December 26, 2008, 06:45:55 pm »

Thank u very very much ,your projects help me very much in learning and teaching
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jorepereira
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Reply #40 on: January 21, 2009, 10:33:14 pm »

Excellent website for learning how to measure with vernier. It is very helpful for all. Thanks and congratulations!  Grin
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lookang
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Reply #41 on: February 04, 2009, 10:35:32 pm »

http://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=684.msg3445#new
Vernier calipers applet with many options for smallest division


normally there is an mark for the smallest scale, like in this applet

can you see?
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lookang
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Reply #42 on: May 07, 2009, 09:49:24 pm » posted from:Singapore,,Singapore

maybe this one is clearer?
http://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=684.0


* Vernier calipers applet lookang.PNG (32.7 KB, 1280x800 - viewed 160 times.)
« Last Edit: May 07, 2009, 09:56:56 pm by lookang » Logged
lookang
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Reply #43 on: May 12, 2009, 10:07:06 pm » posted from:Singapore,,Singapore

this is a Ejs version of the vernier caliper
http://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=684.0

it is by Fu-Kwun Hwang and lookang
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Reply #44 on: September 22, 2009, 04:16:23 pm » posted from:Phagwara,Punjab,India

I am wondering if anyone has had any experience using Vernier's LabPro data collection device with Linux.

While I am familiar with their Linux page, I do not understand most of it. I am experienced with using the LabPro on Windows and Mac, but I would really like to know if anyone has successfully used it with Linux in a classroom environment.
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PriteHome
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Reply #45 on: November 16, 2009, 12:53:38 pm » posted from:Bangkok,Krung Thep,Thailand

I have found that your program are very useful I have to say Thank you for your efforts. Wink
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Fu-Kwun Hwang
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Reply #46 on: November 16, 2009, 05:27:41 pm » posted from:Taipei,T\'ai-pei,Taiwan

Iam glad to hear that you find it useful!  Cheesy
Suggestion to improve the applet will be highly appreciated!
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Reply #47 on: July 30, 2011, 07:37:58 pm » posted from:Bandung,Jawa Barat,Indonesia

Dr Hwang,

I'm very thankful you have made all these simulations. As a secondary school physics teacher, i find the apps very useful for both demos and exam setting.

On another thing, the Creative Commons license basically says I can share these apps, as long as you are acknowledged. I would like to post your apps into my website, as to help make it more interactive for the students I teach. Your approval would be very much appreciated.

Thank you very much!

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Fu-Kwun Hwang
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Reply #48 on: July 30, 2011, 09:21:35 pm » posted from:Taipei,T'ai-pei,Taiwan

You are welcomed to distribute simulations I have created. You can even modify the simulation if EJS has been installed in your computer.
Enjoy the fun of physics!
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Reply #49 on: May 17, 2012, 06:03:25 pm » posted from:Islamabad,Islamabad,Pakistan

Thanks alot it was a real help , as a student of industrial manufacturing engineering with the subject of dimentional metrology it is really important to be clear in the concept so beautifully explained here. thanks again !!!!!!
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Reply #50 on: August 22, 2012, 10:17:18 am » posted from:Bangkok,Krung Thep,Thailand

Thank you
it helped me so so much in my coursework, thank you so much
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koclup1580
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Reply #51 on: December 29, 2012, 01:15:58 pm » posted from:,,Satellite Provider

thank you.
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"Nothing in life is to be feared, it is only to be understood." ..."Marie Curie 1867-1934, Polish born French Physicist, Twice Nobel Prize Winner- Physics and Chemistry)"
 
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