Why are gun barrels rifled? Background to rifling Rifling consists of lands and grooves in the inside of a barrel‚ the lands are the part of the barrel which is not cut away while the grooves are the part of the barrel which is cut away. Lancaster oval bore‚ eight groove rifling and polygonal rifling are only a few example of rifling forms. Lancaster oval bore rifles have a smooth barrel interior. Unlike Lancaster oval bore rifles‚ grooved rifles have grooves which are engraved into the interior
Premium Firearm Rifle Gun
relaxed and without any back pains whatsoever. Are you planning to get a new mattress but do not know what to choose due to the many options that are on the market? If so‚ then you should have a look at the following pros and cons of main types of mattresses. Memory foam mattresses Pros: Memory foam mattresses are the best mattresses that offer you a natural spinal alignment and they actually resist motion transfer so you don’t disturb your partner when moving. In case you want a durable mattress
Premium
Essay 1: The Default In Human Nature The question of good or evil has plagued human thought for centuries. Every distinct society throughout history has had a unique philosophical mindset that guided the practices in structured daily life. The west was indoctrinating Christianity into their constructed idea of self; The east without psychologists or therapists had Confucianism to make sense of life. Philosophy like religion has a main objective that aims to explain what we experience within our
Premium Ethics Philosophy Religion
babies whose mothers took thalidomide during pregnancy. After the connection between the birth defects and thalidomide was made‚ it was quickly identified as a teratogen. Although it is not certain how Thalidomide causes birth defects‚ the leading theory is that it enters the womb by penetrating the placenta. Once the pill is taken by the pregnant mother‚ it breaks down into metabolites‚ or products of metabolic reactions. One of these metabolites is CPS49. CPS49 can break through the defense of the
Premium Pregnancy Childbirth Fetus
Artificial Selection in Animal Breeding Curse or blessing? Today humans use selective breeding to make our daily life easier. We use it in food products‚ we use it in humans which is also known as eugenics but we do it especially in animals. Charles Darwin also known as the father of evolution used selective breeding to help gather proof for his schedueled system for how evolution works by experimenting with animals such as birds. This topic has gotten alot of contreversy as it is considered as
Premium Natural selection Selective breeding Evolution
Arguments on Tanning There are many different opinions on whether or not tanning is good for you. Some believe that tanning may cause skin cancer‚ leading to many deaths. On the other hand‚ many people that tan see tanning as a way to receive the vitamin D that one needs in their day-to-day lives. There are also various reasons as to why one tans. One major reason is to darken their skin and by doing this‚ they gain confidence. Others truly go tanning to soak up the vitamin D that they need for
Premium Ultraviolet Sun tanning Sunscreen
Every person has at some point in their life been promised to have their future explained‚ whether it is done by looking at their palms or the wrinkles in the face‚ but what if the answers to your future were located in your Gluteus Maximus? Rumpology has become the new way of discerning your future. By looking at the wrinkles‚ indents‚ moles and other markings of your butt‚ rumpologists claim to predict your life better than before. Rumpology was believed to have been practiced in ancient Greece
Premium Future Past Time
are vital in developing society. According to this theory‚ society is continually developing as humans continue to interact with each other‚ with the use of symbols. The rational choice theory is all about the idea that people only care about themselves‚ and their own interests shape their way of life. The theory also claims that humans are self aware of the pros and cons of a decision‚ where humans weigh a choice based off of them. The theory suggests that humans weigh between a choice‚ and gravitate
Premium Sociology Symbolic interactionism Psychology
you calculate the crime rate if given the numbers (you need to know the formula) #crime/total popX100‚000 UCR pros and cons PRO: paper trail; CON only 50% crime reported Index Crimes list and defined Part 1 (criminal homicide) Part 2 unofficial from NCVS NCVS pros and cons PRO: capture unreported crimes CON: no paper trail Self-reporting pros and cons: PRO: unsigned crime report; Con: subject not identified Bill of rights: What are the key issues of the following Amendments? 1freedom of
Premium Crime Police Criminology
The Gold Standard Act The Gold Standard Act put the United States on the Gold Standard in 1900. This means the standard economic unit of account is based on a fixed quantity of gold. This act declared that the gold dollar "shall be the standard unit of value‚ and all forms of money issued or coined by the United States shall be maintained at a parity of value with this standard"(Gold Standard). The Gold Standard Act was the pinnacle of Republican monetary conservatism‚ making gold the standard for
Premium Currency United States dollar Money