1, observe the luster. The gloss of silk is soft and even, bright but not sharp. Rayon is also bright, but not gentle. Although the gloss of polyester filament is uniform, it has flashing or bright silk. The lustre of nylon fabrics is poor, which is similar to the feeling of waxing....
by carefully observing such things as grain, color, and texture and studying their most notable characteristics—including luster and hardness as measured on the Mohs Scale—you should soon be able to identify many of these
A, B, C three gradeaccording to the sensory quality of cigarette, luster, aroma, harmony, odor,irritation, Yu Wei six projects were put forward technical requirements. Suchas flue-cured tobacco grade A: oily sheen, aroma fragrance, elegant, full,harmonious, no odor, no stimulation, taste pur...
While pyrite and gold may look similar at first glance, careful examination reveals several key differences. By observing color, luster, hardness, density, streak, magnetism, and crystal structure, one can accurately identify whether a specimen is genuine gold or merely fool’s gold. Utilizing thes...
luster. Second"touch",anotprescriptive.Becausesomepeopleareout oftouch,isintroducedasfollows: Theleathersurfacewithfingersafterthefeelingisvery smooth,whilethesurfaceisnotleathertouchinthepastare generallyveryastringentfeeling,notsmooth,ductilityis alsopoor,whichiselastic,elasticorverypoor(weheresay issoftcowhide...
Key features includecolor,weight,size,shape,design,dates, andother inscriptions. The more information you can gather, the better – this helps identify a coin and might help you check out a fake. Age is, of course, important to rarity, but it isn't all-important. Coins were made to with...
Mohair refers to Angora goat hair, mainly produced in South Africa, which is characterized by coarse fiber, small curl and good luster. Mohair fabric feels smooth and smooth, and its surface is shiny enough. Mohair and alpaca wool are mostly short and smoothstyle。
Then, in choosingsuite furniture, how to identify it? The following is our specific analysis ofthese factors: High-grade Mid-range Low inferior price differential base material The use of green MDF,substrate processing usually wood fiber and plant fiber as raw material, usingsynthetic resin as ...
The products of the Newcomb Pottery have taken such a prominent place in the art world that possessors of examples of this ware will be glad to identify the work of the various artists who have placed their marks on them. The Grueby Faience Co., Boston, MA the Gru...
How do you identify rocks and minerals? When identifying a mineral, you must: Look at it closely on all visible sides to see how it reflects light. Test its hardness. Identify its cleavage or fracture. Name its luster. Evaluate any other physical properties necessary to determine the mineral...