======Luminous Powder Germ Spread======


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**Materials: **{{$demo.materials_description}}\\
**Difficulty: **{{$demo.difficulty_description}}\\
**Safety: **{{$demo.safety_description}}\\
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**Alternative titles:** UV Hand Hygiene Training
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====Summary====                   
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====Procedure====  
  - Apply a small amount of luminous powder or lotion evenly to students’ hands, as though applying moisturizer.  
  - Ask students to wash their hands as they normally would.  
  - Shine a UV torch on their hands to reveal glowing areas that were not cleaned effectively, such as under fingernails, between fingers, and around wrists.  
  - For a contamination activity, dust a small amount of luminous powder on one person’s hand, a doorknob, or a shared object. Allow normal interaction, then use the UV light to trace how the glowing “germs” have spread.  
  - Discuss what this shows about real-life hand hygiene and cross-contamination.



====Links==== 
How To See Germs Spread Experiment (Coronavirus) - Mark Rober: 
{{youtube>I5-dI74zxPg?}}\\


📄 Glitterbug Hand Hygiene Training: [[https://glitterbug.com.au/?srsltid=AfmBOop6SmwT4H5UILiq7pvIW4iPLPki-M4zqXrQTsXPpKEoLfrTz7uQ]]\\

====Variations====
  * Compare handwashing with just water versus soap and water.  
  * Test quick washing (5 seconds) versus proper washing (20 seconds).  
  * Demonstrate germ spread with a handshake chain, passing the luminous powder to multiple participants.  
  * Use food preparation tools (like a cutting board or utensil) to simulate cross-contamination in kitchens.



====Safety Precautions====
  * Use safer UV torches, not high-powered UV lamps.  
  * Ensure no one shines UV light directly into eyes.  
  * Confirm that the luminous powder used is non-toxic and safe for skin contact.  
  * Provide proper cleanup with soap and water after the activity.



====Questions to Consider====
  * Why do certain areas of the hands tend to retain more powder even after washing?  
  * How does this demonstration show the ease of cross-contamination?  
  * Why is soap more effective than water alone in removing contaminants? (Soap molecules break down oils that trap microbes.)  
  * How does this experiment connect to hygiene practices in hospitals, schools, and food preparation areas?