reya gafar

<ul>
 <li>
  STUDENT NAME: Reya Gafar
 </li>
 <li>
  COLLEGE: CMR National PU College ITPL
 </li>
 <li>
  SPECIMEN: Hair samples(cat hair{felis Catus}, dog hair{Canus Lupus familaris}, human hair)
 </li>
 <li>
  SPECIMEN COLLECTED FROM: Bangalore
 </li>
</ul>
<div class="wp-block-media-text alignwide">
 <figure class="wp-block-media-text__media">
  <img alt="IMG-20181220-WA0025" class="wp-image-108931 gcloudimg" data-attachment-id="108931" data-comments-opened="1" data-image-meta='{"aperture":"0","credit":"","camera":"","caption":"","created_timestamp":"0","copyright":"","focal_length":"0","iso":"0","shutter_speed":"0","title":"","orientation":"0"}' data-image-title="IMG-20181220-WA0025" data-recalc-dims="1" src="https://storage.googleapis.com/microcosmosdelta.appspot.com/images/transfer_108933/IMG-20181220-WA0025.jpg"/>
 </figure>
 <div class="wp-block-media-text__content">
  <h2>
   <em>
    ==&gt;Human Hair Follicle (hair type: Straight)
   </em>
  </h2>
 </div>
</div>
<p>
 The above picture shows us the rather distinct shape of a human hair follicle.
</p>
<p>
 We can see that the root of human hairs are usually goblet shaped or club shaped.
 <br/>
</p>
<div class="wp-block-media-text alignwide">
 <figure class="wp-block-media-text__media">
  <img alt="IMG-20181220-WA0018" class="wp-image-108928 gcloudimg" data-attachment-id="108928" data-comments-opened="1" data-image-meta='{"aperture":"0","credit":"","camera":"","caption":"","created_timestamp":"0","copyright":"","focal_length":"0","iso":"0","shutter_speed":"0","title":"","orientation":"0"}' data-image-title="IMG-20181220-WA0018" data-recalc-dims="1" src="https://storage.googleapis.com/microcosmosdelta.appspot.com/images/transfer_108933/IMG-20181220-WA0018.jpg"/>
 </figure>
 <div class="wp-block-media-text__content">
  <p class="has-large-font-size">
   <em>
    <strong>
     Human Hair follicle(Hair type: curly)
    </strong>
   </em>
  </p>
  <p>
  </p>
 </div>
</div>
<p>
 We now see that the hair follicle has a rather jagged elongated shape and does not have a smooth surface.
</p>
<blockquote class="wp-block-quote">
 <p>
  <strong>
   The first difference between curly hair and straight hair is that shape of the shaft. Straight hair has a circular follicle shape so disulfide bridges can form evenly around the cuticles forming no coil like shapes. On the other hand, curly hair grows out of a more oval shaped follicle.
  </strong>
  <br/>
 </p>
</blockquote>
<div class="wp-block-media-text alignwide">
 <figure class="wp-block-media-text__media">
  <img alt="IMG-20181220-WA0024" class="wp-image-108930 gcloudimg" data-attachment-id="108930" data-comments-opened="1" data-image-meta='{"aperture":"0","credit":"","camera":"","caption":"","created_timestamp":"0","copyright":"","focal_length":"0","iso":"0","shutter_speed":"0","title":"","orientation":"0"}' data-image-title="IMG-20181220-WA0024" data-recalc-dims="1" src="https://storage.googleapis.com/microcosmosdelta.appspot.com/images/transfer_108933/IMG-20181220-WA0024.jpg"/>
 </figure>
 <div class="wp-block-media-text__content">
  <p class="has-large-font-size">
   <strong>
    <em>
     Cat Hair
    </em>
   </strong>
  </p>
 </div>
</div>
<p>
 CAT HAIR:
 <br/>
 The diameter of the cross section of cat hair is
 <strong>
  immensely
 </strong>
 fine, with litte variation while we move towards the tips of the hair. The root of the hair remains elongated with no definite shape to it.
</p>
<div class="wp-block-media-text alignwide">
 <figure class="wp-block-media-text__media">
  <img alt="IMG-20181220-WA0023" class="wp-image-108929 gcloudimg" data-attachment-id="108929" data-comments-opened="1" data-image-meta='{"aperture":"0","credit":"","camera":"","caption":"","created_timestamp":"0","copyright":"","focal_length":"0","iso":"0","shutter_speed":"0","title":"","orientation":"0"}' data-image-title="IMG-20181220-WA0023" data-recalc-dims="1" src="https://storage.googleapis.com/microcosmosdelta.appspot.com/images/transfer_108933/IMG-20181220-WA0023.jpg"/>
 </figure>
 <div class="wp-block-media-text__content">
  <p class="has-large-font-size">
   <strong>
    <em>
     Dog Hair
    </em>
   </strong>
  </p>
 </div>
</div>
<p>
 DOG HAIR:
 <br/>
 the diameter of dog hair is broader and coarser, with little variation to the tip though definitely thicker than cat hair. The root of dog hair is spade-shaped and
 <br/>
 broader.
</p>
<blockquote class="wp-block-quote">
 <p>
  <strong>
   <em>
    A few differences I’ve observed from the above pictures and gathered information:
   </em>
  </strong>
 </p>
 <p>
  <strong>
   <em>
    Diameter: Human hairs are usually in the range of 0.05-0.15 mm; animal hairs can be narrower or coarser.
   </em>
  </strong>
 </p>
 <p>
  <strong>
   <em>
    <br/>
    Cat hair is usually finer than human hair or dog hair. … In human hair, the color of the hair can make a difference too.
   </em>
  </strong>
  <br/>
 </p>
</blockquote>


Contrast between different hair samples from various specimen

<blockquote>
 <figure aria-describedby="caption-attachment-49101" class="wp-caption alignnone" id="attachment_49101" style="width: 225px">
  <img alt="IMG-20180719-WA0007" class="wp-image-49101 size-medium gcloudimg" data-attachment-id="49101" data-comments-opened="1" data-image-meta='{"aperture":"0","credit":"","camera":"","caption":"","created_timestamp":"0","copyright":"","focal_length":"0","iso":"0","shutter_speed":"0","title":"","orientation":"0"}' data-image-title="IMG-20180719-WA0007" data-recalc-dims="1" height="300" src="https://storage.googleapis.com/microcosmosdelta.appspot.com/images/transfer_49100/IMG-20180719-WA0007.jpg" width="225"/>
  <figcaption class="wp-caption-text" id="caption-attachment-49101">
   Pollen grain
  </figcaption>
 </figure>
</blockquote>
<p>
 Name: Reya Gafar
</p>
<p>
 College Name: CMR National PU College ITPL, Bangalore
</p>
<p>
 Description:
</p>
<p>
 We had the opportunity to observe and differentiate various nano particles of everyday life that we brought as samples to our college. A great variety of shapes and sizes were observed through the foldscopes
</p>
<p>
 <img alt="IMG-20180719-WA0008" class="size-medium wp-image-49105 alignleft gcloudimg" data-attachment-id="49105" data-comments-opened="1" data-image-meta='{"aperture":"0","credit":"","camera":"","caption":"","created_timestamp":"0","copyright":"","focal_length":"0","iso":"0","shutter_speed":"0","title":"","orientation":"0"}' data-image-title="IMG-20180719-WA0008" data-recalc-dims="1" height="300" src="https://storage.googleapis.com/microcosmosdelta.appspot.com/images/transfer_49100/IMG-20180719-WA0008.jpg" width="225"/>
 that day . This particular picture is of pollen grain from a hibiscus flower. We can see that they are irregular though commonly spherical shaped particles in contrast to the lead powder that was later observed. The lead particles were narrow and were of  sharp edges.
</p>


reya gafar

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Contrast between different hair samples from various specimen

Contrast in pollen grain and lead particles through foldscope

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Foldscope Lens Magnification