To identify real tortoiseshell from material substitutes, apply a hot pin to a hidden spot. If the smell resulting from the hot pin smells similar to burned hair and a black spot develops, the item is likely real tortoiseshell; however, if the burning smells like plastic, then it is not.Know More
Tortoise shell is a material produced from the shells of tortoises and turtles. The hawksbill turtle is the species mostly exploited for the material, causing it to become an endangered species. Stemming from ancient times in both the West and the East, real tortoise shell was often used for items like combs, frames, furniture ornaments, and more. However, by the 1970s real tortoise shell use was officially banned.
To buy or sell real tortoise shell legally, it must be at least a hundred years old and a genuine antique, or had originated from a private collection. Due to the legal aspects of dealing with tortoiseshell, after the ban, plastic, celluloid, bone and horn become common substitutes.
With real tortoiseshell, there can be slight unevenness due to the nature of the shell that molded materials do not have. For genuine tortoiseshell, one can typically see very fine knife marks from where the shell was carved by hand.Learn more about Collecting
To remove gas and oil stains from an asphalt driveway, any damp residue must first be blotted up, absorbent material should be applied on the spot to draw up the moisture, and the area should be scrubbed with a strong detergent and a brush. The scrubbing and rinsing step may need to be repeated several times before the stains go away.Full Answer >
The protoconch, or first shell that a snail is born with, grows with the snail as the animal's mantle -- an organ that lines the shell -- releases new shell material that expands the shell before hardening. This shell the snail was born with becomes the center of the spiral.Full Answer >
Coconut husk fiber, also called coir, is the fibrous material found between the hard interior shell and the outer shell of a coconut. Brown coir is made from ripe coconut, while white coir is taken from an unripe coconut fruit. Bristle coir is the longest variety of fibers and is manufactured from retted coconut husk through defibring.Full Answer >
Probability, or the mathematical chance that something might happen, is used in numerous day-to-day applications, including in weather forecasts. For example, a weather forecast that predicts a 75 percent chance of snow is using probability to communicate that people should be prepared to deal with snowy conditions.Full Answer >