Workshop on Micrometry using Foldscope
Mar 20, 2019 • 9:27 AM UTC
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Punarbasu
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A workshop named” Magnify Your Curiosity-Mathematics in a Laboratory with Foldscope” was organized by Department of Environmental Science, University of Calcutta on 12 th March 2019 at Gramya Hitakari Girls School, Howrah, West Bengal, India in collaboration with Howrah Vigyan Chetna Samannaya.
Map showing the route of Gramya Hitakari Girls School, Howrah, West Bengal, India Introductory
Session-
The workshop started with Dr.punarbasu Chaudhuri delivering a speech on Relative Size of Things and metric conversion of different units of length.
Session-
The workshop started with Dr.punarbasu Chaudhuri delivering a speech on Relative Size of Things and metric conversion of different units of length.
Introductory speech by Dr. Punarbasu Chaudhuri
Workshop on foldscope, at Gramya Hitakari Girls School, Howrah, West Bengal, India
Dr. Punarbasu Chaudhuri delivering a brief idea about units of length Introducing
the macroscopic measuring tools-
After the introductory session, Dr. Punarbasu Chaudhuri demonstrated different length measuring devices such as Measuring tape, Ruler Scale, Vernier Scale, Screw Gauge their applications and limitations too.
the macroscopic measuring tools-
After the introductory session, Dr. Punarbasu Chaudhuri demonstrated different length measuring devices such as Measuring tape, Ruler Scale, Vernier Scale, Screw Gauge their applications and limitations too.
Demonstration of Vernier Calipers to the participants
Ranjan demonstrating foldscope to the participants Measurement
session-
In this session, participants were asked to measure the thickness of their hair with a ruler scale. The measurement was done by coiling a single strand of hair around a plastic refill and measuring the total breadth. After this, the total length measured by ruler was divided by the total number of coils to get the value of a single hair strand.
session-
In this session, participants were asked to measure the thickness of their hair with a ruler scale. The measurement was done by coiling a single strand of hair around a plastic refill and measuring the total breadth. After this, the total length measured by ruler was divided by the total number of coils to get the value of a single hair strand.
Participants observing with foldscope
Participants observing hair strand under foldscope Measurement
of single hair strand using foldscope-
In this session, Stage Micrometer was introduced to the participants and by calibrating stage micrometre with a ruler scale (centimetre scale) we determined the width of a single strand of hair. It was also done at various portion of hair to get the range of the width of human hair.
of single hair strand using foldscope-
In this session, Stage Micrometer was introduced to the participants and by calibrating stage micrometre with a ruler scale (centimetre scale) we determined the width of a single strand of hair. It was also done at various portion of hair to get the range of the width of human hair.
Dr. Punarbasu Chaudhuri demonstrating calibration of stage micrometer with a
centimeter scale
centimeter scale
Single strand of hair under foldscope Measurement
of stomata-
A fresh leaf peel was taken on a slide and the length and breadth of stomata were measured using foldscope.
of stomata-
A fresh leaf peel was taken on a slide and the length and breadth of stomata were measured using foldscope.
Measurement of stomata with ruler scale after calibration using stage micrometer Caution-
During measurement using foldscope, the original images taken by smartphones has to be original images captured from a single device and not zoomed or cropped image.
Conclusion-
This was their first exposure to micrometry using foldscope and the event was a success.
During measurement using foldscope, the original images taken by smartphones has to be original images captured from a single device and not zoomed or cropped image.
Conclusion-
This was their first exposure to micrometry using foldscope and the event was a success.
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