The influence of Nazi rockets on space exploration
By: D. Vogt
In a sense, modern space rocketry owes its genesis to Nazi Germany - an uncomfortable and somewhat disturbing thought. Although rocket inventors and experimenters existed in many industrialized countries during the early twentieth century, the early Cold War space programs of both the Soviet Union...
The most intense supernova in recorded history
By: D. Vogt
The most intense supernova in recorded history occurred in the year 1006 A.D., when a massive supernova occurred on April 30 and was bright enough to be recorded over a period of several months as it gradually dimmed. Today astronomers have been able to...
How to make alkaline water
By: Connie Goranson
Lemon water's health benefits: Fresh lemons make water alkaline. Just buy a fresh lemon, and wash it first. A teaspoon of baking soda in eight ounces of water will rid the rind of any chemicals. Use a vegetable brush in a bowl of water and...
By: Tarek Musslimani
The acid and base concepts are so prevalent that it occurs in all branches of chemistry including organic, inorganic and analytical chemistries. It also occurs in physical and green chemistries. From this we see the importance of this concept so that it would be reasonable...
Facts about dry ice
By: Chris Pine
Dry Ice is a unique substance which has many uses. Essentially, dry ice is frozen carbon dioxide (CO2). The first report of what we now call dry ice came from the French chemist Charles Thilorier, in 1834. In 1924, the DryIce Corporation of America trademarked...
By: Ian Farquharson
Gold has been one of the most sought after metals in the history of mankind and its beauty has been prized since it was first discovered in ancient times. It is one of the most common precious metals in jewelry making and for a longtime...
By: SEG
After thousands of years of scientific and philosophical assessments regarding Time, Aristotle’s original observation that “Time is the measure of change” still gives to us the simple knowledge that Time and motion are inextricably bound together within our awareness. In our daily experience...
The use of composite materials in aviation
By: Srikanth Radhakrishna
Aircraft manufacturing technology has come a long way from the days when engineers used wood and steel to construct aircraft. In the early 1920s aluminium replaced wood and steel, which also improved aircraft design. With advancement in technology in the aviation industry, composite materials are...
Understanding density and why objects float on water
By: Nick Ford
The easiest way to understand density and why objects float in water is to walk in the footsteps of a great mathematician. In the third century BC King Hieron II of Syracuse had a problem. A goldsmith had made a beautiful new crown that was...
By: Chris Pine
The Spring Equinox has been an important time of the year for many cultures throughout history. Equinox literally means “equal night”, and the Spring Equinox is the time when the day and the night on the equator are of equal length. This astrological event...

 

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