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2. Suanpan - Wikipedia

   en.wikipedia.org/wiki/Suanpan

   A 5+1 suanpan appeared in the Ming dynasty, an illustration in a 1573 book on suanpan showed a suanpan with one bead on top and five beads at the bottom. The evident similarity of the Roman abacus to the Chinese one suggests that one must have inspired the other, as there is strong evidence of a trade relationship between the Roman Empire and ...

3. Soroban - Wikipedia

   en.wikipedia.org/wiki/Soroban

   A suanpan (top) and a soroban (bottom). The two abaci seen here are of standard size and have thirteen rods each. Another variant of soroban. The soroban is composed of an odd number of columns or rods, each having beads: one separate bead having a value of five, called go-dama (五玉, ごだま, "five-bead") and four beads each having a value of one, called ichi-dama (一玉, いちだま ...

4. Rooftop solar power - Wikipedia

   en.wikipedia.org/wiki/Rooftop_solar_power

   The following section contains the most commonly utilized components of a rooftop solar array. Though designs may vary with roof type (e.g. metal vs shingle), roof angle, and shading concerns, most arrays consist of some variation of the following components Solar panels produce carbon free electricity when irradiated with sunlight.

5. Traditional Chinese roofing - Wikipedia

   en.wikipedia.org/wiki/Traditional_Chinese_roofing

   A qingshui ridge [] on the end of a roof. Traditional Chinese roofs are also distinguished by a number of distinct roofing elements, such as ridges. In addition to the main ridges (Chinese: 大脊; pinyin: dà jí), certain traditional Chinese roofs have additional ornamental ridges, such as qingshui ridges [] (Chinese: 清水脊; pinyin: qīngshuǐ jí) and juanpeng ridges (Chinese: 卷棚脊 ...

6. Roof - Wikipedia

   en.wikipedia.org/wiki/Roof

   Newer systems include solar shingles which generate electricity as well as cover the roof. There are also solar systems available that generate hot water or hot air and which can also act as a roof covering. More complex systems may carry out all of these functions: generate electricity, recover thermal energy, and also act as a roof covering.

7. The Difference Between Étouffée And Gumbo - AOL

   www.aol.com/difference-between-touffe-e-gumbo...

   What Is Étouffée? Étouffée is a classic dish from Louisiana's Creole cuisine consisting of shellfish and vegetables in a sauce served over rice.