Not AI But Real Answers By Experts!
Diphtheria is a serious disease. It is caused by bacteria, and illness starts a few days after the bacteria enter the body. The bacteria usually enter the body through the mouth and nose and infect the throat first. Usually, there is a sore throat, fever, and a feeling of being unwell. A grey or pale membrane appears … Read more
It is rather hard for us to realize that our sun is merely just another star in the sky. This is probably because we think of the stars as looking so tiny. The sun looks larger than any star because it is only about a million miles from the earth. The nearest star is 25 … Read more
At the early age of air conditioning, cooling homes were not the intended purpose when Willis Carrier invented the modern air conditioner. Air conditioners were used to control industrial quality earlier, as well as the comfort of the workers. Though, artificial climate control made steel and glass skyscrapers practical. After World War II, home air … Read more
The admit human heart is about the size of a clenched fist. Yet it generates enough energy in 24 hours to lift 68,0£O kilograms, or the weight of a locomotive, 30 centimeters off the ground. It pumps about 16,360 liters of blood in 24 hours. This amazing organ, which only weighs 225 to 340 grams, … Read more
Seeing, of course, is done by the eye. But our brain plays a very important part of the process we call seeing. Mechanically, this is what happens. Light waves pass through the pupil of the eye and form an image on the retina. The retina is a carpet-like screen of cells at the back of … Read more
Human often expose their bodies to the sun to get a ‘tan”. Very few people realize that sunlight has many important effects on the skin. The most obvious is to produce redness or sunburn. This is caused by ultraviolet light. It transforms “histidine”, a substance contained in the skin, into a substance that opens up … Read more
One of the great mysteries of the world in which we live in the light. We still do not know exactly what it is. It can only be described in terms of what it does. We know the light is a form of energy. Like some other forms of energy—heat, radio waves, and X-rays—the speed, … Read more
Did You Know That Both Hair And Nails Have The Same Origin? They both develop from the horny layer of our skin. A hair develops when a part of this skin goes down into the lower layer and strikes roots there. Then it shoots upwards through the layers of the skin and comes out like hair. In the … Read more
Asparagus has been considered one of the finest table delicacies since the days of the ancient Greeks and Romans. Yet strangely enough, asparagus grows wild around the coasts of Europe and in other sandy places. In fact, it is so common on the steppes of Russia that the cattle pasture on it! Of the 150 … Read more
You can get a pretty good idea of what causes an earthquake from thinking about what happens during an earthquake. During an earthquake, there is a trembling of the ground. It is this trembling of the earth that may cause buildings to fall. So an earthquake is a trembling or vibration of the earth’s surface. What … Read more