can anyone tell me interesting facts about cones?

Answer 1

Cone cells, or cones, are cells in the retina of the eye which only function in relatively bright light. There are about 6 million in the human eye....

Answer 2

Why Use Cones?
To understand why pyrometric cones were developed, we should go back to the time before they were in use to see how kilns were fired. Before the invention of the cone, determining when kiln firings were complete was done purely by eye. No accurate device was available that could indicate when to shut off the kiln.
To fill that need, Edward Orton Jr., a professor of ceramic engineering at The Ohio State University, developed a set of cones that he began to sell into the ceramic manufacturing industry. Originally designed to indicate when a firing was complete, the pyrometric cone is now used as a quality control tool to help determine temperature uniformity within the kiln, atmospheric differences, repeatability between firings, and accuracy of the thermocouple.

What is a Cone?

Cones are slender pyramids made from about 100 carefully controlled ceramic compositions. They are manufactured to bend in a repeatable manner over a relatively small temperature range (less than 40°F). The final bending position is a measure of the amount of heat absorbed during firing.
Throughout the ceramic manufacturing field, when we talk about what temperature to fire our product, we refer to the cone that bends over when that product is properly fired. Each cone is identified with a number stamped into its side. The numbering system has evolved since the first set of cones was introduced. The original set was numbered from 1 to 42, with cone 1 being the lowest temperature cone used at that time and 42 the highest.

Since then, cones have been developed that indicate temperatures below cone 1. Thus, cones 01 through 022 were introduced, and cone 022 is now the lowest temperature cone.

Firing ceramics is much like baking, except temperatures are higher. Ceramics can be fired over a range of temperatures. Some products have a wide firing range, while others have a narrow range. Firing to a slightly lower temperature requires the ware to be held for a longer time, just as if you were baking a turkey. This is because it takes time for the ware to absorb all of the heat needed to properly "cook" the piece.

We refer to this absorption of heat as heatwork. When the amount of heatwork for two firings is the same, the pieces will look identical, even if one is fired to a higher temperature for a shorter time and another is fired at a lower temperature for a longer time. Since cones measure heatwork, all manufacturers recommend the cone number to which their product should be fired.

Answer 3

Cones have 1/3 the volume of a cylinder with the same base radius and height.

Answer 4

Get a friend with a lathe to make you a wooden cone whose cross-section is an equilateral triangle. Cut it in half with a vertical slice from the apex to the base. Rotate one half 120 degrees relative to the other, then glue the two halves together. It's a neat toy to roll around.

Answer 5

yes.that is were scientists tak dna or an embrio and make a copy of something else.....no wait..thats clones...oops..never mind.....beam me up scottie

Answer 6

You can stick ice cream in them.

Answer 7

madonna wore them. (^v^)

Answer 8

??? idont know??