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Can of Pie85

Refractor Vs. Reflector Telescopes

Want to know why a the Hubble is a refractor telescope? What difference it makes?

7 comments    education space stars
A solar oven (otherwise known as a solar cooker) being used outside a hut in Africa for cooking food80

Residential solar power systems - solar ovens and solar cookers

A solar oven uses solar energy as its sole source of fuel, and they therefore cost absolutely nothing to run.They are fantastic to use when camping, trekking, cooking outdoors, or installing in the wall of a house. Although mainly promoted in the third-world at the moment, they are increasingly being used in the western world, too.

18 comments    hubchallenge solar power
A refractor telescope by Sky-Watcher76

How to Choose a Telescope

How to choose a telescope? This is the question dealt most with every day in a telescope store. From the complete beginner to the more experienced astronomer every buyer has a number of questions but the...

3 comments    moon astronomy planets
Celestron NexStar 6 SE Telescope - Computerised to navigate for you77

Choosing a Beginners Telescope

Choosing a beginners telescope can be overwhelming. With reflectors and refractors, aperture, eyepieces and more to get familiar with. This little guide will help with the confusion.

0 comments    telescope telescopes
78

How to harness Sun's energy by making a solar concentrator

Visit this web page for detailed step-by-step construction method of a solar concentrator. If you need to work on your solar parabolic cooker project this is the article you should read.

14 comments    solar power solar energy
71

How to make a really hot solar cooker

Find out about how to make a parabolic solar concentrator for FREE right here. This web page describes in detail each and every step in making a solar concentrator.

22 comments    how to technology solar power
76

Hydroponic Systems Produce Huge Harvests

In order to discover more about the pH-PPM Perfect Technology please check out the best hydroponics newsletter on the web. In order for hydroponic gardeners to produce huge harvests in their hydroponic...

5 comments    gardening hydroponics cilantro
Studio shots don't need to be formal!73

Children's Portraits

Our children seem to grow up far too fast these days, and we treasure memories of their childhood... looking at photographs, smiling at the fun we had and remembering the laughter. A professional...

7 comments    children hubchallenge camera
72

Types of Telescopes

There are 3 primary types of telescopes on the market today: refractors, Newtonian telescopes, and catadioptrics. All three telescope types are highly competent systems. Let's review the pros and cons of each...

0 comments    telescopes refractor telescopes
71

Recycling Old CD's into Crafts

How-to article on recycling old compact discs and jewel cases into crafts with two additional youtube.com videos to get you started.

0 comments    novhubchallenge stained glass
working