Bottle of light

Overview: This is based on the fantastic Litre or Liter of lLght idea of putting plastic bottles in the roofs of tin houses which have no electricity in order to transfer light into the house. What are the best bottles and systems to use?

Equipment Provided: Plastic bottles, cardboard box, light meter/mobile phone, scissors, tape

Health and Safety: You must carry out your own risk assessment (Rubbish Science accept no liability)  Note:Be careful when cutting

Things you might need to know / Questions you might ask:

  • How is light transferred through a plastic bottle?
  • Is it more efficient with water and/or bleach and how much water should you use??
  • What is the minimum concentration of bleach needed to prevent algal growth? How might you find out?
  • What size/colour/shape bottles work best?
  • Will the plastic photo degrade?
  • What is the best way of sealing the bottles into the roofs they don’t leak?
  • Can the light be reflected by mirrors or foil ?  (inside of crisp packets)

Prototyping: Try to answer the questions above using small scale experiments

Modifications:How might you modify your designs based on what your preliminary results look like? What have others done and what can you learn from them?

Prediction: What do you think will happen and why?

Do it: How are you going to see if your light is successful?

What happened?: Was your light effective?

Tell Someone: Explain what you did and why you felt your plant growing was effective. Listen to others do they have any good ideas?

What did you learn? What do you know now that you didn’t know before you started this investigation?

Extension/Modify/Do it again: How could you extend this to produce a commercial bottle installation business?