Monday, September 9, 2013

Parallel and Series circuits

parallel circuit, series circuit




Parallel and series circuits
 There always exists a question how to double currency and leave voltage the same ?  or how to increase voltage while leaving capacity the same ? If we want to answer these questions we have to be aware of parallel and series circuits...
 When we connect our batteries in series actually we increase the voltage while maintaining capacity (amps an hour or second) the same.
 If we connect our batteries in parallel, I want to say that we don`t increase the voltage, we only increase capacity. That`s the different between series and parallel.
 To prove my words, I`ve done experiment and got data that represent relation between voltage and current while connecting baterries in series and in parallel :
Series
Voltage : 2.45volts
Capacity : 0.7 amps
Parallel
Voltage : 0.8 volts
Capacity : 2 amps
 There is a question what happens when we connect series and parallel circuits together ? what do we get ?
 After connecting parallel and series together I got strange answers. My hypothesis was that they both (volts and amps) would increase but they stayed minimum. So Current was 0.7 amps and Voltage 0.8 volts. So it didn`t make any sense.
 
References :
http://overlandresource.com/connecting-batteries-series-and-parallel
http://www.zbattery.com/Connecting-Batteries-in-Series-or-Parallel
http://www.science.org.au/primaryconnections/science-background-resource/data/Phy/sub/seriespara/seriespara.htm

Temperature affects human body

temperature affects human body, enzymes,



how does temperature affect human body



 Every object has it`s own temperature. Human body temperature is variable and changes every minute. Sometimes we have high temperature which means that we have flue. If we have low temperature we have hypothermia. But mainly normal temperature is from 36 to 37.
 Generally Temperature affects how the enzymes work in your body. Enzymes are proteins that catalyze (i.e. incraese the rates of) chemical reactions in living cells. If it gets too hot or cold the enzymes might denature and lose the shape of their active site, which means the substrate may no longer fit and this decreases the rate of the chemical reactions. Moreover, if the temperature is too high one may start to sweat in order to evaporate some of the heat off their skin. If too much water is lost through sweating, one may become dehydrated and experience a variety of symptoms. Dehydration (from the Greek hydor(water)) and the Latin prefix de- (indicating deprivation, removal, and separation) occurs when more water and fluids are exiting the body than are entering the body. With about 75% of the body made up of water found inside cells, within blood vessels, and between cells, survival requires a rather sophisticated water management system. Luckily, our bodies have such a system, and our thirst mechanism tells us when we need to increase fluid intake. Although water is lost constantly throughout the day as we breathe, sweat, urinate, and defecate, we can replenish the water in our body by drinking fluids. The body can also shift water around to areas where it is more needed if dehydration begins to occur.

 If the temperature is too cold, one may begin to shiver in order to gain heat, which uses energy from respiration. One may also experience hypothermia. If heat losses exceed heat gains the body temperature will fall this is hypothermia too. Mainly Hyperthermia occurs when the body produces or absorbs more heat than it can dissipate. It is usually caused by prolonged exposure to high temperatures. The heat-regulating mechanisms of the body eventually become overwhelmed and unable to deal effectively with the heat, causing the body temperature to climb uncontrollably. Hyperthermia at or above about 40 °C (104 °F) is a life-threatening medical emergency that requires immediate treatment. Common symptoms include headache, confusion, and fatigue. If sweating has resulted in dehydration, then the affected person may have dry, red skin.
In a medical setting, mild hyperthermia is commonly called heat exhaustion or heat prostration; severe hyperthermia is called heat stroke. Heat stroke may come on suddenly, but it usually follows the untreated milder stages. Treatment involves cooling and rehydrating the body; fever-reducing drugs are useless for this condition. This may be done through moving out of direct sunlight to a cooler and shaded environment, drinking water, removing clothing that might keep heat close to the body, or sitting in front of a fan. Bathing in tepid or cool water, or even just washing the face and other exposed areas of the skin, can be helpful.
With fever, the body's core temperature rises to a higher temperature through the action of the part of the brain that controls the body temperature; with hyperthermia, the body temperature is raised without the consent of the heat control centers.
 To sum up more or less temperature then needed ( 36,5 normal) is very bad for our human organism. It can cause many diseases. We should always control our temperature with taking fluids and exercises normally !





Analysis of great work GILGAMESH

             
gilgamesh, analysis of gilgamesh, who was gilgamesh, enkidu, antique story, epic of Gilgamesh, First written story, Sumerians,
       

  Analysis of Gilgamesh

Epic of Gilgamesh is the first written story in our world. It is said that Sumerian people wrote this poem more than 2000 years ago and this poem was only discovered in 1853. Lots of lines are missing from the book but it’s still very interesting. In the book there is said about Sumerian period, we can see that Sumerian’s were quit developed for their time, the agriculture was developed the city’s looked like modern day ones and everything seemed as if it just 2 or 3 centuries ago. The writing of the Gilgamesh proves their developing skills; they were the first who wrote on clay tablets, the first whoever wrote a poem. Despite of its time the epic of Gilgamesh is still very interesting and fascinating. The story tells about Gilgamesh who by author is thought as the first and most powerful king who during the story meets as powerful man as him Enkidu. With him he goes through many obstacles and finally Enkidu dies, Gilgamesh tries to find a man who became immortal as Gilgamesh gets frightened by the death of Enkidu.
As I read the whole story lots of parts interested me but I decided to analyze a part from the second tablet when Enkidu decides to come to Uruk and meet Gilgamesh.
Here is the part: 
Then he raised his eyes and saw a man.
 He said to the harlot:
 "Shamhat, have that man go away!
 Why has he come'? I will call out his name!"
 The harlot called out to the man
 and went over to him and spoke with him.
 "Young man, where are you hurrying!
 Why this arduous pace!"
 The young man spoke, saying to Enkidu:
 "They have invited me to a wedding,
 as is the custom of the people.
 ... the selection(!) of brides(!) ..
I have heaped up tasty delights for the wedding on the ceremonial(!) platter.
 For the King of Broad-Marted Uruk,
 open is the veil(!) of the people for choosing (a girl).
 For Gilgamesh, the King of Broad-Marted Uruk,
 open is the veil(?) of the people for choosing.
 He will have intercourse with the 'destined wife,'
 he first, the husband afterward.
 This is ordered by the counsel of Anu,
 from the severing of his umbilical cord it has been destined
 for him."
 At the young man's speech his (Enkidu's) face flushed (with anger).
 [Several lines are missing.]
 Enkidu walked in front, and Shamhat after him.
 [The Standard Version resumes.]
 He (Enkidu) walked down the street of Uruk-Haven,
 ... mighty...
 He blocked the way through Uruk the Sheepfold.
 The land of Uruk stood around him,
 the whole land assembled about him,
 the populace was thronging around him,
 the men were clustered about him,
 and kissed his feet as if he were a little baby(!).
 Suddenly a handsome young man ...
 For Ishara the bed of night(?)/marriage(?) is ready,
 for Gilgamesh as for a god a counterpart(!) is set up.
 Enkidu blocked the entry to the marital chamber,
 and would not allow Gilgamreh to be brought in.
 They grappled with each other at the entry to the marital chamber,
 in the street they attacked each other, the public square of the land.
 The doorposts trembled and the wall shook,

[About 42 lines are missing from the Standard Version; lines 103-129 are taken from
 the Old Babylonian version.]

Gilgamesh bent his knees, with his other foot on the ground,
 his anger abated and he turned his chest away.
 After he turned his chest Enkidu said to Gilgamesh:
 "Your mother bore you ever unique(!),
 the Wild Cow of the Enclosure, Ninsun,
 your head is elevated over (other) men,
 Enlil has destined for you the kingship over the people."
 [19 lines are missing here.]

They kissed each other and became friends.
 [The Old Babylonian becomes fragmentary. The Standard Version resumes]
 "His strength is the mightiest in the land!
 His strength is as mighty as the meteorite(?) of Anu,
 The mother of Gilgamesh spoke to Gilgamesh, saying;
 Rimat-Ninsun said to her son:
 "(I!), Rimar-Ninsun...
 My son...
 Plaintively ...
 She went up into his (Shamash's) gateway,
 plaintively she implored ...:
 "Enkidu has no father or mother,
 his shaggy hair no one cuts.
 He was born in the wilderness, no one raised him.

You see the part which interested me, because I thought that this part would have been very important in the story, I thought that major turning point had to happen here and as I was reading it I predicted that whether Gilgamesh and Enkidu will fight and become enemy’s or whether Gilgamesh would just destroy Enkidu and kill him. My predictions were wrong and that’s why I liked the part for me it was something unexpected but at the same time very interesting. Let’s start the analyzing from the first part of this conversation. As we can see the action starts with Enkidu going towards a young shepherd who seems to live the place for some time. Enkidu gets interested and finds out that the young man is going to town to choose a wife for Gilgamesh, we know that there was a rule that future wife of Uruk’s citizen at first had to spend night with Gilgamesh and then with her husband. From this little part Enkidu decides to go to Uruk and finally battle Gilgamesh who one more time proves his arrogance, selfishness and dictatorship over his people, we can also say that despite this territory being far away from Uruk Gilgamesh was still very eminent in this states and even an ordinary shepherd knew him. From this little part we can also see that Enkidu gets very angry after hearing the story about wife’s, we can see his motivation towards battling Gilgamesh and Enkidu from the very beginning disliked Gilgamesh and wanted to see him defeated, this little scene already gets us ready towards a big clash between world’s 2 most powerful people it was the same as two heaven of bulls fighting against each other or two lion hearted man battling each other for the pride and title of the strongest and fair full person. Enkidu angry and full of energy decided to go to Uruk what again proves us his braveness he didn’t stay to get prepare but immediately after hearing the news about wife he left the place to battle Gilgamesh. As we know Enkidu was a powerful man his appearance was totally different from other people, he was strong, high, hairy and very powerful this fact is proved in the next lines as Enkidu enters the Uruk. People thrive around him because for them it was a shock they had only seen one person like this and it was Gilgamesh, maybe Enkidu gave them an opportunity for the future, a hope that this could be the person who will change or overthrow Gilgamesh and who can bring us good and peaceful living, the people were desperate for some change they were fed up with old ruling and wanted either Gilgamesh to become a better person or to just to dethrone him from his place what was very hard and what only a person like Enkidu could do. Enkidu was ready so he blocked the way for Gilgamesh and the battle started for which I waited since starting reading of “epic of Gilgamesh”, I was looking forward to more describing but unfortunately the lines are missing, but anyway it was interesting but what’s most important and exciting is that they didn’t beat each other they physically could not as both of them had exactly the same power. When the battle finished I think all of us expected some different turn of the story but it came out to be totally different. After the fight Enkidu praised Gilgamesh as a king, they kissed and became friend. From that time on they were heroes that the Uruk needed, Enkidu was the person who changed the faith of Uruk and finally they were two friends who were ready to sacrifice each other for one another. After this analysis a new topic came to my mind and it was “Do heroes exist today?”
This question really bothered me and I decided to compare today’s heroes to heroes like Gilgamesh and Enkidu.
At early times heroes were measured by strength by their appearance, power, popularity and how many people they had killed. In the early centuries for people heroes was more of a patriot than hero because he only did good things for one country like killing people winning battles and just doing violent things. They thought that this was heroism but in my opinion real heroes come from the middle or later centuries like for example for Georgia David the Builder is a hero but still he became a hero for only Georgia and for only our people because we saw him as a savior. In fact real heroes are people who fight not only for their people but for the whole humankind. For example: Martin Luther King who fought for the rights of all black people, it was not that he fought only for Americas black people in fact he was fighting for the whole black race. Mahatma Gandhi is the same example maybe he mainly fought for India but his approach towards violence and war changed the way the whole world thinks.
In my opinion heroes are not people who are strong and killing everybody like Gilgamesh heroes are people who change the world who change the attitude towards different things and the way people think about them. In the world there are also small heroes who helped their countries and are considered as heroes in their countries.