Search Results - Tool stone
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? before Homo ( Pliocene) A stone tool is, in the most general sense, any tool made partially, or entirely out of stone. Although stone-tool-dependent cultures exist even today, most stone tools are associated with prehistoric societies that no longer exist. The study of stone tools is often called lithic analysis by archaeologists. Stone tools may be made of chipped stone or ground stone. A person who makes chipped stone implements is called a flintknapper. In addition to tools, many minerals were used to make arrow heads and spear points. Chipped stone tools are made from cryptocrystalline materials such as chert or flint, radiolarite, chalcedony, basalt, quartzite and obsidian via a process known as lithic reduction. One simple form of reduction is to strike stone flakes from a nucleus (core) of material using a hammerstone or similar hard hammer fabricator. If the goal of the reduction strategy is to produce flakes, the remnant lithic core may be discarded once it has become too small to use. In some strategies, however, a flintknapper reduces the core to a rough unifacial or bifacial preform, which is further reduced using soft hammer flaking techniques or by pressure flaking the edges. More complex forms of reduction include the production of highly standardized blades, which can then be fashioned into a variety of tools such as scrapers, knives, sickles and microliths. In general terms, chipped stone tools are nearly ubiquitous in all pre-metal-using societies because they are easily manufactured, the tool stone is usually plentiful, and they are easy to transport and sharpen.
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Showing 1 to 6 of 6 Articles matching 'Tool stone' in related articles. |
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1. Important Things To Take Note Of When Looking For a Registry Repair Tool
October 19, 2009
The slow performance of the computer and delayed response can be attributed to registry errors. Therefore, it should be considered necessary to fix registry errors right away. So how are you going to do this? You dare not touch the registry manually if you are not a computer expert. Else, you are going to call for additional problems and this is not going to solve your issue absolutely. What method should you use to fix a corrupt registry?
The safest method is to use a registry repair tool. The windows registry is a very complex and delicate system. One mishap can break down the entir... (read more)
Author: Bob Stone
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2. What Can A Registry Repair Tool Do For You?
October 15, 2009
The first thing that should cross your mind when you want to fix your windows registry is a registry repair tool. Alot of us simply look for solutions in online web forums and try to abide by the instructions given by what you hope is a professional.
Remember, by taking this action you are just taking chances with your PC. If the solution works for you, then that is terrific. However, if you make a mistake it could very likely spell disaster for your PC altogether.
On the contrary, if you just ignore those errors and think that they are going to go away in due time, you are just foo... (read more)
Author: Bob Stone
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3. Why You Should Use Writing Tool Online
October 09, 2009
Affiliate marketers greatly benefits from online writing tools. In order to promote products and services online, you need to have an effective article that goes with it. An effective article draws attention to the product or service offered and sometimes, marketers do not have the skill of making one. When in need of assistance in article making, you need a reliable online writing tool to help you.
Writing tools online is a big help to those who has little time in their hands or to those who is in dire need to meet deadlines. Researching online for a certain topic can take hours before e... (read more)
Author: Lucy Stone
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4. Creating an Online Life Story for a Lost Loved One
October 09, 2009
For most of us, those who thought about life in general, we want to live a life that will make a lasting impact upon the generations to come. We have to know ourselves first before we do that. And to better know ourselves, we have to know about our past, our family history specifically. For our family members who past away already reading their obituaries might not be enough to really get to know the person. To keep the memory alive, you can use an online memorial.
Creating an online memory is way better than a mere obituary in terms of getting to know those we love who are no longer with... (read more)
Author: Lucy Stone
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5. Ways On How To Make Extra Cash With Blogs
October 02, 2009
What started off as a means of people sharing their life experiences and story with online users, has now become a tool for multiple other possibilities. Not only has it become a fad but it has also become a means of generating extra money. Would you like to know how to make extra cash while indulging in blogging?
There are people who use it as a stepping stone to becoming an author. After all the content is already written over time in the blog.
There are those who use it as a platform to comment or express their opinions on different matters. Blogs can also become a way of adv... (read more)
Author: Reina Raine
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6. Controlled rope access - Providing a safe window cleaning service
October 02, 2009
Controlled rope access provides a means for window cleaners to access large buildings safely and efficiently. It provides the perfect tool for high level window cleaning, stone and masonry maintenance, and structural inspections. In order for this to be carried out correctly and safely there are a number of factors that need to be taken into account. Risk Assessment A full risk assessment should always be carried out prior to the work. This should include assessing the ease of access, the likely duration of the work, the presence of any dangers or hazards, and the possibility of using a... (read more)
Author: James Brack
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