Which recycle material contain Fresnel lens?

More Abdul Majeed Khan's questions See All

What will be the most effective method to separate ethanol from water?

Please provide me practically viable solution.

06 July 2017 6,359 6 View

Which material will be better for solar reflection?

Either aluminium, chrome, steel, mirror or any other.

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How I can separate the azeotropic mixture of water-ethanol-benzene?

Ethanol and benzene have very close BP

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Is it possible to achieve the pyrolysis of plastic by solar heating?

Can conventional heat is replaced by solar heat for pyrolysis of wastes?

04 May 2017 9,787 22 View

Is it possible to achieve the temperature within the range of 300 to 800 oC using solar heat.

How much maximum temperature can be achieved by solar reflector, solar refractor and by the combination of both?

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Is is possible to convert linear/smooth Fresnel lens to the lens having grooves (Newton rings)?

I have removed Fresnel lens from rear projection TV but it is plane/smooth/without grooves/without Newton rings. It concentrate the solar radiations to some extent. The Fresnel lens with grooves...

04 May 2017 6,812 4 View

Out of the following which will give the highest temperature?

Solar reflector, solar refractor, solar diffractor or solar deflector

04 May 2017 9,066 3 View

Maximum how much temperature can be achieved by solar reflection?

By using reflecting materials like aluminium foil, chrome, shining steel etc the solar radiations are reflected and concentrated to increase the temperature.

04 May 2017 6,399 5 View

How much H2 you produced, at what temperature and pressure?

Plz provide some basic information

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Could you suggest me the proper system to convert biogas (obtained from garbage/wastewater digestor) to hydrogen by steam reforming?

Currently, I do not have any oven that fulfill the need of high temperature.

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flexibility of polymers chain

effect of double bond on the flexibility of polymers

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Formulation of polymer color flakes

I am writing to request some information for making polymer color flakes. I would appreciate the help.

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What is the production process of CaFe ferroalloys?

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12% ledeburitic cold work tool steel, etched for revealing retained austenite, any help for clarifying?

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How Can I bring as much common elements in steel as possible to calculate stable phase(s) in OpenCalphad?

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How can you bring two structures together to create an adhesive bond in LAMMPS?

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What is the density for pva electrospining?

I'm Juan Carlos, a high school student who is working with electropinning, I made an electropinning machine with a 21g needle and a 30kv high voltage source and the distance between my needle is...

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Is anyone familiar with the cyclic compressive fatigue testing (BS EN 12697 - 25) ?

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For modelling epoxy-based matrices (in composites), which model in ABAQUS is the most suitable, Concrete damaged plasticity or Drucker-Prager model?

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How to calculate Z (the number of molecules in a unit cell) for calculating theoretical density?

I am trying to calculate the theoretical density of my ceramics materials. I use the formula below to calculate the theoretical density: Theoretical density = (Molecular weight x No. of molecules...

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Alan F Rawle

This is very helpful: http://bfy.tw/BpGD as it immediately brings you to:

http://ths.gardenweb.com/discussions/2355847/which-tvs-use-a-fresnel-lens

You can even buy them for $3.95:

https://www.teachersource.com/product/1134/homeschool-science?gclid=CMDotoiL9dMCFYlKDQodctQLjw

or on Amazon: https://www.amazon.com/Magnifier-Projection-Cz-Garden-Supply/dp/B00IITFX02