What Is an Aerosol?
What Is an Aerosol? An aerosol consists of fine particles of liquid or solid substances suspended in the air, or in any other gas. It is not, as many people think,...
Read More
Who Sent the First Radio Message?
Who Sent the First Radio Message? Guglielmo Marconi is usually credited with sending the first radio message. Marconi was born in Bologna, Italy, in 1874 to an Italian...
Read More
When Was the First Gas Balloon Used?
When Was the First Gas Balloon Used? The first gas balloon, filled with hydrogen, was released in Paris in August, 1783 which was designed by a French professor of...
Read More
How Do Sewing Machines Work?
How Do Sewing Machines Work? Sewing machines today often work by electricity. But there are over 2,000 different types, with attachments for turning hems, tucking,...
Read More
Where Will Water Boil at a Low Temperature?
Where Will Water Boil at a Low Temperature? Water will boil anywhere, but it boils at different temperatures in different places. For example, it will boil at a lower...
Read More
Who Invented the Aeroplane?
Who Invented the Aeroplane? The first aeroplane ever to fly was built by a French naval officer, Félix du Temple de la Croix (usually simply called Félix du Temple). In...
Read More
What Does Waterlogged Mean?
What Does Waterlogged Mean? Wood becomes waterlogged when all its cells are filled with water. It can absorb water only up to about 30 percent its own weight. As it...
Read More
Why Does Stainless Steel Resist Rust?
Why Does Stainless Steel Resist Rust? Stainless steel resists rust because it contains a high proportion of chromium to carbon. Before the arrival of this alloy just...
Read More
Why Does an Automobile Have a Carburetor?
Why Does an Automobile Have a Carburetor? An automobile is driven by an internal combustion engine which will work properly only if the right amounts of petrol and air...
Read More
Who Invented the Wankel Engine?
Who Invented the Wankel Engine? Felix Wankel, a German motor engineer, invented the rotary piston engine which bears his name. Deprived of a university education when...
Read More