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Hydrogen is the most abundant element in the Universe. It is the first element on the periodic table and is represented by the chemical symbol H. It is a highly flammable gas that has many important uses. Although it was first produced in 1671 by Robert Boyle, it wasn’t officially recognized until 1766 by Henry Cavendish. If you want to know how many isotopes hydrogen has, keep reading to find out.
Yellow fever is a dangerous infectious disease that is transmitted by the bite of a mosquito. It occurs in the sub-tropical and tropical regions of Africa and South America. In 85% of cases the disease is relatively mild and lasts 3-15 days. However, in 15% of cases yellow fever enters a second phase that is fatal approximately 20% of the time. The symptoms during the first stage include; fever, headache, chills, back ache, nausea and/or vomiting. In the second stage fever reoccurs and may be accompanied by jaundice (liver damage), abdominal pain, bleeding of the eyes and mouth and bloody vomit. Let’s take a look at what causes this dangerous illness.
The Chicago Bulls are a professional basketball team based in Chicago, Illinois. They compete in the National Basketball Association (NBA) and are members of the Central Division of the Western Conference. The team was founded in 1966 and recorded the best record by an expansion team in the history of the league. Despite this record the team had very little success in the early years. However, this changed with the drafting of the famous basketball superstar Michael Jordan in 1984. Led by Jordan, the Bulls created one of the best dynasties of all time by winning 6 NBA Championships from 6 Appearances in the 1990’s (1991-1993 and 1996-1998). Continue reading if you want to know where the Chicago Bulls play their home games.
Xenon is a colorless and odorless noble gas, which means it is a gas with very low reactivity. It is represented on the periodic table with the symbol Xe and has an atomic number of 54. It occurs naturally in trace amounts in the atmosphere and is obtained as a byproduct when air is separated into oxygen and nitrogen. Xenon was first discovered in 1898 by William Ramsay and Morris Travers, but the first use for this gas wasn’t found until the 1930’s. Let’s take a look at some of the most common applications of Xenon.
Dry ice is the solid form of carbon dioxide. Its appearance is similar to water ice, but it freezes at a much lower temperature. Unlike water ice it melts directly to a gas, which leaves no liquid residue. It has many important applications such as refrigerating and flash freezing food. It is important to be aware that dry ice can cause skin damage with prolonged exposure. Let’s take a look at how dry ice is made.
Hyperion is a moon of Saturn that has an irregular shape and chaotic rotation. It is thought to be one of the largest bodies in the solar system to have an irregular shape and the only larger moon with an irregular shape is Proteus, a moon of Neptune. The first close analysis of Hyperion occurred in 2005 during the flyby of the moon by the Cassini spacecraft. However, this moon was discovered much earlier than this. Let’s take a look at who discovered this unique moon.
Dominic Cooper is a celebrity actor who began his career working in television and film in his native Britain. He quickly established himself in the industry and began working on the stage as well. To worldwide audiences he is best known for his work in the hit movie “Momma Mia.” Although his career is still developing he has the talent to make it big in the industry. The following is a list of movies that Dominic Cooper has acted in during his career so far.
Roadrunners are birds from the cuckoo family. There are two species of roadrunners known as the greater roadrunner and the lesser roadrunner. Both species are found in Central America and in the southern parts of North America. The name comes from the fact that these birds prefer to run than fly. They have been known to reach speeds of 42 km/h (26 mph) while running. They often use this incredible speed to catch their food. Let’s take a look at the diet of these birds.
Austria is a country located in Central Europe and is a member of the European Union. It is a landlocked country and is bordered by 8 other countries. Australia has close ties to Germany and German is the official language of the country. The country is relatively small in terms of area and population. In fact, there are only 5 cities in the country with a population of more than 100,000. If you want to know which of these cities is the capital of Austria, keep reading to find out.
Almost anywhere on the planet Earth you will experience day and night. The Earth orbits the Sun along with the 8 other planets in our solar system. It takes the Earth approximately 365 days to complete a full orbit around the sun. The Earth does not sit straight up and down on its axis in space with the North Pole facing directly up and the South Pole facing directly down, but in fact sits on a tilt of approximately 23.5o. At different points in the Earth’s orbit this tilt causes certain parts of the Earth to be closer or further away from the sun and this is what causes the seasons to occur. When each hemisphere is closer to the sun it is spring and summer and when it is further away it is the seasons of fall and winter. It takes approximately 24 hours for the Earth to complete one full rotation or turn on its own axis. This is how we determine the length of our days. It is also what causes day and night.