explain potter;s wheel, firing of ceramic, decoration of ceramic?
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the potters wheel is a device that spins in order to create symmetrical clay objects, such as bowls, vases, plates, cups, etc. A lump of clay is put in the center of the turning wheel. As the wheel spins the potter uses their hands to shape the lump of clay into the desired object.\n\nthe clay (ceramic) needs to be fired in order to drive moisture out and to set the clay into a permanent shape. It is at this time that the plate is glazed. The glazing is a glossy paint that also needs to be fired. In the firing process the chemical composition changes...taking the glaze from a dull paint like substance to a shiny hard surface on the ceramic.\n\nThe object can be hand painted to decorate the ceramic.
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I assume the rollers are ceramic, but which ceramic they are can be critical. Almost all ceramics are brittle, some have relatively high thermal coefficients of expansion, and some are low strength. (See ref. 1.) Not to tell you your business, but it seems that ceramic rollers have some pretty special requirements regarding preparation for and length of service (ref. 2). This problem sounds like something you need to discuss with your kiln vendor.
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During what "early times"?  Can you give the years  or era?\n\nHere's one:  Mechanical Roasting on the Hearth\n\nhttp://www.aross.binome.com/journal/articles.html  (it has pictures and diagrams, as well as an article about it.  That whole website may have more for you -- visit the HomePage of it and go from there.)\n\nGood luck!!   :)\n\n[Edit]  Wow!  I am SO sorry!  I just got your e-mail & replied.  In the event you see this first, I am writing the info here.  Apparently, the link above gives you a "front page" (with an article called "Hearth-to-Hearth").  At the bottom, there is a drop down menu.  In it (near the bottom) is "Mechanical Roasting on the Hearth".  Click on it -- it should take you to the page of devices.  The drawings are there.  \n\nI did (originally) to find the info for you.  I copied and pasted the address above from that devices page -- but it must be set up such that one always gets that front page.  I am really so sorry.  I hope you get this -- or "an answer" -- before your homework's due!!  Again, so sorry.   :)   - Clar
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It's when you burn something to offer it to a god or gods, usually on an altar made for this purpose - made of stone and outside.  Many ancient cultures practiced this; it was believed that the smoke rising to heaven and the transformation via fire sent the essence of the grain or lamb or whatever, to the god(s).
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well its all part of the process of making glass. When blowing glass it is heated to the point of flexibility........almost into a liquid form. The colors and swirls are formed during this state. Marbles are rolled to be solid, thus why the different "demensions" can be seen inside the marble. At times you can see an air bubble. Whites and colors come from the different colors added during the heating process. Just as they make glass beads. Go to Venice, Italy! Its amazing to watch. :)
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It's Pentacle and Triquetra.\n\nThe pentacle has many meanings, but the most basic is the elements. Earth, Air, Fire, Water and spirit. These are the five points. The circle around it represents the circle of life and death, the seasons, etc.\n\nThe Triquetra is a Celtic symbol, representing triads, such as Maiden, Mother and Crone, which are the three stages of a woman's life. It also represents the moon, Waxing, full, and waning, which represent the stages of the Goddess. The Triquetra was popularized by the TV series Charmed.\n\nPagan symbology is very rich, and it's nigh impossible to talk about all of it in even a single volume. Below are a couple sites to get you started.
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See Wikipedia: http://en.wikipedia.org/wiki/Bricks\n\nEVERYTHING ABOUT BRICKS!  It is not as simple as it appears.
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All i know is that stoneware is better than earth ware. it's more durable. in colonial times, they used salt in their glaze to give it special effects
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A candle: wax = white petticoat, flame = red nose\nThe longer it stands (burns) the shorter it grows.
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http://www.aish.com/graphics/shabbos/candles.pdf.
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If the UGCG is stamped on the bottom, Red or Gold colour the item is mass produced in a factory, If the UGCG is carved into the bottom it is hand made by a pottery maker.
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Bunsen burner- to heat\nmortor and pestel- to grind solids into powder
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S A T O R\n  A R E P O\n  T E N E T\n  O P E R A\n  R O T A S\n\nWhile some sources translate this as "The sower Arepo holds the wheels at work"
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Here's a pretty good FAQ on spinning wheel design and history:\n\nhttp://www.spwhsl.com/faqlink.htm\n\nIt includes links to plans for making your own spinning wheel.
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Learned the art of blowing glass.  such as vases, bowl and platters.
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It is done with a paint spraying machine and a line marker.\nIt rolls on 4 wheels and a nozzle is pointed down and the color comes out.
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Porcelain is a hard ceramic material. It is fired at a higher temperature than that used to fire glazed earthenware and stoneware pottery. It is white or off-white in colour, translucent and can be decorated to provide additional colour. Porcelain is made by firing a mixture of materials including China clay and China stone in a kiln at temperatures in the region of 1200 to 1350 degrees Celsius. The resulting material is hard, strong, glassy and durable, but also brittle. The main components of porcelain, China clay (kaolinite) and crushed China stone (a form of feldspar) are found in nature and result from the weathering and decomposition of igneous rocks such as granite and basalt.\n\nClays used for the manufacture of porcelain can be specially formulated to provide high-strength and high-durability. It is also possible to blend clays to obtain a clay body that is ideal for throwing on a potter's wheel. A wide range of porcelain clays is readily available from many specialist suppliers of materials for ceramics.