1. Are the colors you see the same as the ones I see?
The difference in light wavelength depends on a few other factors as well. perception, moods, memories, feelings are some of the factors that contribute to people seeing colors differently. (1, 2, 3)
2. Why do clouds float when they have tons of water in them?
The reason why clouds do not fall despite vast volumes of water in them is that the water droplets are lightweight and dispersed in the atmosphere. Also, the upward motions (updrafts) counteract the falling tendencies of particles in the atmosphere, causing the clouds to form, grow, and survive in air moving upwards. As the air rises, the pressure decreases, and at high altitudes, the wind causes cooling and the survival and growth of clouds. As the water droplets cool, they clump together to big sizes, big enough to finally give in to gravity and fall as rain. (1, 2)
3. How can we be falling asleep while watching TV but are wide awake when we go to bed just five minutes later?
According to sleep-medicine specialist and associate professor of psychiatry at the University of Pennsylvania, Philip Gehrman, being unable to fall asleep while lying in bed is often a learned arousal. There are certain therapies and ways through which this condition can be treated. One of them is Cognitive Behavioural Therapy for Insomnia (CBT-I) that aims at rewiring your brain to see the bed as a place to get sleep. However, if a person does not have insomnia, they just might have a late body clock. Reducing or avoiding screen time before bed can be crucial, as the blue light emitted from the screens can decrease the production of melatonin which is an important chemical that helps us sleep. (source)
4. Caffeine almost has no calories, yet it seems to give us a burst of energy on its own. Where does this energy come from?
Consumption of caffeine can make you feel energetic. As much as 80% of Americans consume caffeine every single day. Caffeine interacts with our bodies differently. It acts as a central nervous system stimulant. It is known to increase the effects of neurotransmitters. Caffeine interacts with adenosine receptors by blocking them which, in turn, enhances the effects of dopamine. Consumption of caffeine can also increase adrenaline in your blood which makes your heart rate shoot up and your liver release more sugar into your bloodstream. It helps contract our muscles by stimulating the release of calcium ions into the muscle fibers.
Caffeine does provide us with that extra energy we need in the morning, but overconsumption of caffeine can cause withdrawal symptoms. According to the Mayo Clinic, a healthy adult can safely consume 400 milligrams of caffeine daily. Caffeine, on one hand, lowers the risk of dementia and Alzheimer’s and cuts suicide risk by almost 45%. Yet, on the other hand, consumption of caffeine can cause serve acid reflux, heartburn, increased urination, irregular heartbeat, and a long list of other undesirable effects. Caffeine also interferes with absorption and metabolism of calcium which can result in thin bones and muscle aches. It is very important to read the labels and monitor the intake of caffeine. (source)
5. Why do we lose our baby teeth?
At around ages five and six, the permanent teeth start pushing at the roots of the baby teeth, making them loose. The loose teeth will fall after a certain period. The little blood you see when the baby teeth fall is caused by the bleeding of the gums that were holding the teeth. Humans lose all the first 20 teeth, also called ‘milk teeth,’ and gain a total of 32 permanent teeth. However, some people retain their baby teeth for life and never get permanent teeth. This condition is known as a “congenital” issue. (1, 2)
6. Why do you blink when there is a sudden loud noise close by?
When there is a loud noise, the ears and eyes send messages to the subconscious part of the brain using sensory nerves. The mind, in turn, commands the nerves controlling the eyelid to close the eye. (source)
7. Why does your eyesight get worse with age?
Presbyopia is a part of the natural aging process. It makes the lenses in our eyes hard which weakens the ability of our eyes to change focus. This lens-hardening is caused due to decreasing levels of alpha-crystalline. It is considered a type of refractive error where a person is not able to focus on nearby objects, especially in low-light conditions. Ability to focus on nearby objects deteriorates as we age. As a child, we can focus on objects as near as 50 mm. As we grow older, this distance increases to 100 mm by the age of 25, and then to about one to two meters above the age of 60. The risk of developing presbyopia increases after the age of 35, and almost everyone is affected by the condition to some extent.
Some other factors which affect our eyesight daily are exposure to shorter wavelengths of visible light and UV light. Constant and prolonged exposure to these types of light can cause vision impairment. Apart from that, smoking is considered really harmful to your vision. According to studies, an individual who smokes is twice as likely to develop AMD as a non-smoker. The probability of developing cataracts is three times that of non-smokers. Smoking causes deposits of heavy metals such as cadmium in the lens of our eyes which can lead to such problems. (source)
8. Why do people snore?
Snoring can be induced through a variety of factors which include consumption of alcohol, sleep deprivation, the position in sleep, and the anatomy of a person’s mouth. While snoring is not a disease, it is a symptom of a disorder known as “sleep apnea.” It is a condition in which a person is not able to sleep properly due to poor breathing and obstruction of their airway. About 40% of men and 24% of women suffer from habitual snoring, and an estimated 22 million Americans suffer from sleep apnea. (source)
9. Why does shaking soda make it lose its carbonation
10. What makes a shooting star fall?
When the object enters the Earth’s atmosphere and burns up in the sky, it is called a “meteor.” When it survives the burning and hits the Earth’s surface, it is called a “meteorite.” Meteor showers occur when the Earth passes through a comet’s debris stream. During this time, the meteors appear a few minutes or seconds apart and originate from the same spot. It is estimated that 25 million debris, meteorites, and other fragments enter the Earth’s atmosphere every day. (1, 2)