As humans, we are naturally inclined to be curious about everything. When we see something, our brains often have the habit of wondering why something was made a specific way. By being curious, you are keeping your brain sharp and it makes you view the world with a different set of eyes. However, there are times where we cannot find answers to questions that have intrigued us for days, months or even years. For instance, why do soda bottles have bumps on the bottom whereas bottles of water have no bumps at all? Have you ever observed that? Here, we are listing 10 answers to simple questions that you have always wanted to know.
1. Why doesn’t glue stick to the inside of the bottle?
It’s simple. Glue doesn’t stick inside the tube because there is a very small amount of air present inside. When you squeeze it out of a tube and apply to a surface, it comes in contact with the surrounding air. This causes the water within to evaporate, thus hardening the glue and the process is called mechanical adhesion.
2. Why do soda bottles have bumps on the bottom whereas water bottles have flat bottoms?
Plastic soft drink bottles usually have 5 bumps (corrugation), not just for a fancier look. The bumps increase the strength of the bottle and allow them to adjust to the change in volume and temperature. Since soft drinks are served chilled, its volume changes when its cooled and thus will have an impact on the shape of the bottle. The tip on the bumps however, can expand and contract without breaking, allowing the change in volume of the liquid. Another reason is that the bottles have to be strong enough to withstand the pressure of the gas in soda.
3. Who gets the middle-seat armrests on planes?
Although there are no official rules as to who’s allowed to use two armrests, according to etiquette experts, the person in the middle has the right to claim them. If you think about it, the person in the middle has no access to neither the bathroom nor the window. The person who has the window seat has the luxury of leaning against it and enjoy the view. The person sitting by the aisle on the other hand has the luxury of stretching their legs. The person in the middle however, has no such control so etiquette experts say that the person in the middle seat has control over both armrests.
4. Why are wedding dresses white?
As normal as it is today, brides haven’t always worn white wedding dresses. The trend is believed to have originated during the Victorian era when Queen Victoria wore a white lace and silk-satin gown when she married Prince Albert on February 10, 1840. The queen also thwarted tradition by wearing a wreath instead of a crown in her hair. Even Victoria’s 12 bridesmaids wore white.
5. Why does orange juice taste horrible right after brushing your teeth?
If you’ve ever decided to drink a glass of OJ right after brushing your teeth, you probably regretted it. The strange, bitter taste of orange juice after brushing your teeth can be attributed to the sodium laureth sulfate (SLS) in your toothpaste. When orange juice and toothpaste get together, they affect your body’s ability to taste sweet and bitter flavors, which plays a big part in making that OJ taste so gross. Sodium laurel sulfate, or SLS, is a type of soap that suppresses the receptors on the taste buds that can pick up on sweet flavors. So, for a while at least, you can’t taste anything sweet.
6. Why is ice so slippery?
Ice becomes slippery because of the thin film of water generated by the pressure you create. Because ice is less dense than liquid water, its melting point is lowered under high pressures. When you step on it, the pressure of your weight causes the top layer to melt into water. These water molecules however, cannot attach themselves to the water molecules at the surface, creating a thing slippery layer.
7. Are zebras white with black stripes or black with white stripes?
For long, people believed that zebras had white bodies with black stripes. Recent studies however prove that zebras are actually black on the surface with white stripes! Like most animals — zebras and humans included— produce a pigment called melanin that gives color to our skin. In the case of zebras, some skin cells are instructed to not produce melanin and that is what we see as white stripes. In fact, zebra embryos are completely black. The white stripes appear during the last embryonic stage.
8. What color is a mirror?
By definition, an object is whatever color it doesn’t absorb. Since mirrors reflect all colors pretty much perfectly, shouldn’t they be white? Well, technically, no, since a mirror doesn’t reflect colors the same way that pigment does. Studies show that mirrors actually do reflect one surprisingly wavelength of light slightly better than others – and that’s light in the 510 nanometre range, which we perceive as green. So, in reality, mirrors are actually green.
9. Why do our palms sweat when we become nervous?
When we become excited or nervous, our bodies release stress hormones which causes our hearts to pound. The same stress hormones causes your palms to become sweaty. This is because there are higher concentrations of sweat glands on your palms and on the soles of your feet than any other part of your body. Sweating is also a way for you to cool down your body temperature.
10. Why do cats purr?
No one knows exactly why a domestic cat purrs, but there are some theories. One of the most popular theories is that they have adapted to conserve energy by resting for long periods of time. So, it is possible that purring is a low energy mechanism that stimulates muscles and bones without a lot of energy.