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The alchemist typically works alone or in secret, so the process of turning lead into gold is not often observed by others. It is a closely guarded secret known only to a select few.
Diamond, although being extremely hard is also brittle so therefore is not used in armor. Most modern armor used today is a composite of several metals and materials and their exact composition is a closely guarded secret.
You can't. As a top secret operation, the specific details of the mission, especially the names of personnel will remain classified still. So, unless you have a militarily justifiable need to know, you cannot get that list. To protect field operatives in Special Operations, the names of personnel are a closely guarded secret.
As contact with people from other lands increased, the Chinese realized how valuable their silk was as an item of trade. So, the techniques of silk production became a closely guarded state secret. Because of the worldwide demand for silk, Chinese commerce expanded along the Silk Roads to most of Asia and, through India, all the way to Rome.
It would be hard to invent anything close to what we have a preseption of "God" being like, as it would take alot of power and money. But should the government find out before the general public if god had not existed then they would keep it as a closely guarded secret so not to cause unrest on the general public.
theoretical yes but, the techniques needed to do this have yet to become prevalent. if it is possible at this time it is a closely guarded secret. any army that possessed soldiers that can see in the dark without bulky equipment would have an amazing advantage in combat. as it stands only a handful of people in history have ever been reported to have "Cat Eyes" so its not impossible just extremely rare.
Porcelain was known as white gold in Europe because the formula for making it proved so elusive for a very long time. The Chinese closely guarded the secret to porcelain manufacture to protect their porcelain industry. The Germans finally figured out the formula and began manufacturing porcelain at Meissen in the 1700's.
The current series of Dr.Who has finished for this year now- if you want to know what DID happen in any episodes you missed, these are described on WikiPedia. As regards what is GOING to happen in future episodes, this is an extremely closely guarded secret. BBC Wales, which makes the series, keeps such information highly classified and under tight guard, so nobody can possibly know what's coming up in the future!!
It was guarded night and day.
Silk was - and still is - a very expensive material; controlling knowledge the process by which silk cloth is made allows you to be the only producer of silk and name your own price. Once it becomes common knowledge, anyone can make it and under-cut your price.
Silk was - and still is - a very expensive material; controlling knowledge the process by which silk cloth is made allows you to be the only producer of silk and name your own price. Once it becomes common knowledge, anyone can make it and under-cut your price.
Canopic Jars were part of an Egyptian Mummification Ceremony in which the internal organs were removed from the body and placed in conopic jars. The Jackal- heaed god guarded the stomach, The god Imsety guarded the liver, The Babbon- Headed god Hapi guarded the lungs andthe falcon headed god Qebehsenuef guarded the intestines. The heart was left in the body so that it could be weighed in the afterlife.