Home Page
- 6810755 reads
A video to help explain what E=mc2 means.
Some more information
For all the Sheldon Coopers out there.
using a meme to look at this
E = mc2. It's the world's most famous equation, but what does it really mean? "Energy equals mass times the speed of light squared." On the most basic level, the equation says that energy and mass (matter) are interchangeable; they are different forms of the same thing. Under the right conditions, energy can become mass, and vice versa. We humans don't see them that way—how can a beam of light and a walnut, say, be different forms of the same thing?—but Nature does.
So why would you have to multiply the mass of that walnut by the speed of light to determine how much energy is bound up inside it? The reason is that whenever you convert part of a walnut or any other piece of matter to pure energy, the resulting energy is by definition moving at the speed of light. Pure energy is electromagnetic radiation—whether light or X-rays or whatever—and electromagnetic radiation travels at a constant speed of 300,000 km/sec (186,000 miles/sec).
Why, then, do you have to square the speed of light? It has to do with the nature of energy. When something is moving four times as fast as something else, it doesn't have four times the energy but rather 16 times the energy—in other words, that figure is squared. So the speed of light squared is the conversion factor that decides just how much energy lies within a walnut or any other chunk of matter. And because the speed of light squared is a huge number—90,000,000,000 (km/sec)2—the amount of energy bound up into even the smallest mass is truly mind-boggling.
Here's an example. If you could turn every one of the atoms in a paper clip into pure energy—leaving no mass whatsoever—the paper clip would yield 18 kilotons of TNT. That's roughly the size of the bomb that destroyed Hiroshima in 1945. On Earth, however, there is no practical way to convert a paper clip or any other object entirely to energy. It would require temperatures and pressures greater than those at the core of our sun.
From this website---http://www.pbs.org/wgbh/nova/einstein/lrk-hand-emc2expl.html
awesome-nature-wallpaper-26197-26887-hd-wallpapers.jpg
58794e25b086b36e8b2f5f07ea200acc.jpg
5123938_f520.jpg
6891538_orig.jpg
81vdpwcaz1l._sl1500_.jpg
The Normans from France were the first to build castles that were made of dirt and wood. they were called, Motte and Bailey Castles. The term motte and bailey castle comes from Norman French words for mound and enclosed land.
In the Romanian countryside, is the 12th century fortress of Prince Vlad Dracul, also known as Vlad the Impaler. It was the setting of Bram Stoker's 1897 horror novel, Dracula.
Neuschwanstein Castle is a nineteenth-century palace built on a rugged hill above the village of Hohenschwangau near Füssen in southwest Bavaria, Germany. It was built as a retreat and as a homage to Richard Wagner by Ludwig II of Bavaria. The palace was intended as a personal refuge for the king.
Caerlaverock Castle has that familiar castle surrounded by a moat look. It was first built in the 13th century. It is located on the southern coast of Scotland, on the edge of the Caerlaverock National Nature Reserve. Caerlaverock was a stronghold of the Maxwell family from the 13th century until the 17th century when the castle was abandoned.
Hohensalzburg Castle is translated into English as, "High Salzburg Fortress." The castle sits atop the Festungsberg, a small hill in the Austrian city of Salzburg. It is one of the largest medieval castles in Europe.
Eltz Castle, or the German translation, Burg Eltz, is a medieval castle that was built in the hills above the Moselle River between Koblenz and Trier, Germany. It is still owned by a branch of the same family (the Eltz family) that lived there in the 12th century,
The Château de Suscinio or de Susinio is a French castle, built in beginning of the 13th century. It is a moated castle and was the residence of the Dukes of Brittany. It is located in the commune of Sarzeau in the département of Morbihan, near the coast of the Atlantic ocean. It was designed to be a place of leisure.The castle was fortified and enlarged, at the end of 14th century, when the heirs of the duchy had to fight to keep their lands.
Hohenwerfen Castle (German: Burg Hohenwerfen) stands above the Austrian town of Werfen. The castle is surrounded by the Berchtesgaden Alps. The castle was built between 1075 and 1078 by the order of Archbishop Gebhard of Salzburg. Formerly the castle belonged to the Habsburg family of Austria , currently, their relatives The House of Sforza, Count Andreis reside within it.
Burghausen Castle in Burghausen, Upper Bavaria, is the longest castle complex in the world.
The castle's history started in the Middle Ages when a chapel dedicated to Our Lady of Pena was built on the top of the hill above Sintra. According to tradition, construction occurred after an apparition of the Virgin Mary.
One of the most famous castles in the world is Windsor Castle. It is the residence of the Roayal Family od England. The original castle was built in the 11th century after the Norman invasion of England by William the Conqueror. Windsor Castle is owned by Queen Elizabeth II
A moated castle near Robertsbridge in East Sussex, England. It was built in 1385.
Hohenzollern Castle is the ancestral seat of the imperial House of Hohenzollern. It has gone through 3 changes since first constructed in the 11th century. The final castle was built between 1846 and 1867. It is the most visited castle in Germany.
The Alcázar of Segovia began as an Arab fort, which itself was built on a Roman fort. It has served as a royal palace, a state prison, a Royal Artillery College and a military academy since then. It is currently used as a museum and a military archives building.
Le Mont-Saint-Michel or Saint Michael's Mount, is an island commune in Normandy, France.The island has held strategic fortifications since ancient times and since the 8th century AD has been the seat of the monastery from which it draws its name. According to legend, the archangel Michael appeared in 708 to Aubert of Avranches, the bishop of Avranches, and instructed him to build a church on the rocky islet. Aubert repeatedly ignored the angel's instruction until Michael burned a hole in the bishop's skull with his finger.
Camelot the castle associated with the legendary King Arthur. Most scholars regard it as being entirely fictional. It brings up the stories of The Knights of the Round Table. However, no direct evidence has been provided to show it actually existed.
The castle has a long association with legends related to King Arthur. Local tradition, founded largely on the writings of Geoffrey of Monmouth in his twelfth-century History of the Kings of Britain, claims this is the birthplace of King Arthur. The ruins of the castle, dates back to the twelfth or thirteenth centuries.
Truly beautiful----but eventually, it will be washed into the sea
A wonderful form of art.
According to the Guinness Book of Records, Prague Castle is the largest ancient castle in the world. From its beginnings in the 9th century, the castle was a seat of power for kings of Bohemia, Holy Roman emperors, and presidents of Czechoslovakia. It is the official residence of the President of the Czech Republic.
Might be a difficult castle to defend. Here is the story behind this small castle------http://anitasnotebook.com/travelstories/the-smallest-castle-in-the-world/
soundfreaq_sfq_02rb_bluetooth_wireless_speaker_system_1.jpg
83639_1000x1000.jpg
rory-gilmore-girls-wallpapers-1024x768.jpg
halloween-riddle.png
10006968_10152344893719777_511745310_n.jpg
- 1 of 59
- ››