Estimated time : 3o hoursOverview:The lifestyle these days has made us dependent upon the artificial light even during the day time when we have the leisure of sunlight. This has led to an increased power consumption for lighting, increasing the carbon emissions. With the use of fibre optical cables, sunlight can be harnessed for the lighting system during the day.Vocabulary:Artificial and natural lightNon-renewable and renewable source of energyCarbon footprint and carbon emissionsTotal Internal ReflectionSustainable architectureObjectives:Generate awareness about Carbon footprint.Increasing sensitivity to green building normsDiscuss the need and usage of renewable source of energy for sustainable architectural norms.induce the concept of energy saving via usage of fibre optical cables.Next Generation Science Standards: ESS2.D Weather and climate ESS3.A Natural resources ESS3.C Human impacts on Earth systems ESS3.D Global climate change PS3.A Definitions of energy PS4.B Electromagnetic radiation PS4.C Information technologies and instrumentation Required Project Material:For prototypeplastic fibre cableswhite LEDfunnelaluminium paintbattery, wires, switchflower vaseFor actual projectcoated glass fibre cablesconcave reflectorscardboard boxesFor alternative ideasOHP sheetsSolar panelsMultimedia resources:https://youtu.be/0MwMkBET_5I What Is Optical Fiber? -Definition And Types Of Optical Fiber byjus.com › Physics › Optics (google.com) 9 Uses of Fiber Optic Cables (rs-online.com) https://youtu.be/-VYhfR8Fv2IEngage:Background:Natural resources are of two types: renewable resource : replenishes to replace the portion used up within a given time period in a human life-time, like sunlight.non-renewable resource : cannot be readily replaced by natural means at a quick pace to keep up with consumption, like carbon-based fossil fuel. Green building norms in India: Sustainable Architecture and DesignSite Selection and PlanningWater ConservationEnergy EfficiencyBuilding Materials and ResourcesIndoor Environmental QualityInnovation and Development Introduction:With rising pollution and threat from global climate change, it is necessary to reduce Carbon footprint to decrease carbon emissions. Only then it is possible to achieve the Paris Climate Change Agreement goal to keep limit the global temperature rise this century below 2 degree Celsius.The changing work lifestyle, pushed further by the pandemic-enforced country-wide lock-down, has increased our dependency on artificial lights even during day time. This has led to an increased electrical light consumption at house-hold and individual level.Indoor community places such as swimming pools, lounge areas, hotel receptions, etc also use a lot of electrical lighting system throughout the day. This has led to an increased cumulative and collective carbon footprint. Advantages of using fibre cables:support sustainable architecturelow usage of coppercompliance to environment-friendly policiesless repair ratecapable of lighting up till 330 feetoccupies minimum spaceno risk of electrical hazardseasy installationtropical and equatorial regions receive sunlight almost throughout the year. This can harness the sunlight in the best way.flexible enough to tie knotsOther uses of fibre optical cables:underwater communication cablesresource monitoring sensorsPassive Optical LANmedical uses : Remote spectrophotometry, Endoscopic imaging, Pressure and position sensing, Scintillation counting, Intravascular pressure transducersExplain:Concepts:Reflection : Light falling on any surface is thrown back with almost no absorption.Refraction : Incident light wave, upon changing the medium of travel, experiences a change in speed and direction.Critical angle : the angle of incidence beyond which rays of light passing through a denser medium to the surface of a less dense medium are no longer refracted but completely reflected, causing Total Internal Reflection (TIR) Fibre optic cable : a cable consisting of one or more thin flexible fibres with a glass core, through which light signals can be sent with very little loss of strength. Carbon footprint : total greenhouse gas (GHG) emissions caused by an individual, event, organization, service, or product, expressed as carbon dioxide equivalent Tubular skylight : device that captures light from the roof of a building, and then channels that light through specially designed tubes to into a room.Explore:Building the prototype: (Fibre Optic Lamp)Make a basic circuit using the LED, wires, switch and battery.Place it inside the flower vase.Paint the funnel with the aluminium paint. It will work as a reflector.Bundle up all the plastic fibre optic cables and insert it in the funnel.Place the funnel facing downwards, while the cables should be coming out from the bottom of it.Place the funnel with the cable bundle on flower vaseSwitch on the LED.