Any knowledge that is accepted by most of the people as true and is not needed to be rechecked for its authenticity is known as common knowledge. But to our surprise, most of the facts are not very common among the people.
1. People usually believe that the term “third world country” is linked with poverty. But the truth is that it simply refers to countries that did not align with either the US bloc or the Soviet block after WW2. We usually consider “Third World” as the countries associated with poverty-stricken. The countries aligned with the US bloc were called First World while the countries with Russian block were called Second bloc. The term Third World includes communist countries like North Korea, very rich ones like Saudi Arabia and very poor countries like Mali. Thus, Third World countries are those who did not align either with the US bloc or the Soviet bloc after world War II.
2. If the sun or somebody’s high beams are blinding you from behind then you can switch your rear view mirror to “night mode”. While driving at night, our vision gets blurred by the high beams of the light coming from a vehicle behind us. It can also happen during the day time due to the sun’s glare. To avoid this, we can switch our rear view mirror in night mode. There is a little tab under the rear view mirror in your car. A ghost image will appear which will reduce the glare.
3. A close look at your keyboard will reveal bumps on the keys ‘F’ and ‘J’. They are there so that you know where to put your fingers without looking down. When using keyboard, the fingers of our left hand resides on the keys A,S,D and F and the fingers of the right hand on the keys J,K,L and colon. To guide the fingers in the correct position, there are two bumps on the keys F and J. This helps the user to place his fingers in the optimum trying position.
4. Plugging earbuds/headphones іn the microphone jack will make them function as microphones. Internal structure of microphone and a speaker is same. If you will connect the headphones into a microphone jack and speak into it, the diaphragm of the driver of the headphones is moved by the molecules of the air that makes up a sound wave. So, next time just plug in your headphones in the microphone jack and use it as a microphone.
5. Deodorants and antiperspirants are completely different. Deodorants should be used by those who hardly sweat or stink. Antiperspirants are best for those who sweat a lot and aren’t able to reapply again and again in a day. Deodrants and antiperspirants should not be confused to be same. Deodrants tackle body odor. Hence, people who hardly sweat or stink should stick with deodrants. The people who sweat a lot should use antiperspirants as it prevents sweat by blocking the ducts which releases sweat.
6. Human resources are there to protect the company, not the employee. HR will not protect an employee if he/she is in conflict with someone else who is not from the company. Whenever some problem or misunderstanding arises between the members of a team, the HR department has to intervene in between to solve the issue. People think that it is for their benefit. But that’s not always true. The main motive of the HR department is to go benefits for the company rather than focussing on the benefits of the people. Sometimes HR advocates employees against bad managers. But most at the other times, what’s best for the employer will not be what’s best for the employee.
7. Aspirin can help save people during heart attacks. But in order for the aspirin to help save your life during a heart attack, you need to chew it instead of swallowing. Aspirin can be an emergency remedy for heart attack. It inhibits platelets into the blood stream of the patient thus removing the blockage in the artery. During heart attack, its est to chew an aspirin of 325 mg quickly.
8. Feeding bread to ducks can harm them. Also, cats should not be fed dairy products as it may cause diarrhea. Feeding ducks seems to be a wonderful activity when we are in a park. It has been found that in England, people feed six million loaves of bread to ducks every year. But it is adviced not to feed ducks with bread because white bread contains no nutritional value and is full of calories. Same is with feeding milk to cats. Feeding milk to cats is doing more harm than good. It causes upset tummies, cramps and diarrhea in cats. Mother’s milk is best for them and you must provide them with fresh and clean water to hydrate themselves.
9. CPR do not wake up a patient immediately as shown in movies. Rather it simply allows blood and oxygen to continue circulation, keeping the person alive until EMTs arrive. Its shown in movies that when chest is pushed after a person receives a cardiac attack, immediately he breathes with a sudden jerk and his life is saved. This is not a magic but a technique known as CPR, i.e, cardiopulmonary resuscitation. People does not magically jump to life when CPR is performed on them. Rather it allows continuous circulation of blood and oxygen in the patient’s body and brain until the paramedics arrive at the scene.
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