Today I Learn

12 Jan 2024 03:41

Why does hot oil splatter on pouring water ?

Oil heats up faster than water because it has a lower specific heat capacity.

As it reaches past boiling point of water as the water is denser than oil so its at the bottom.

Then it turns into steam and the steam expands splashing the oil everywhere.

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10 Jan 2024 18:15

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08 Jan 2024 16:21

Why do we have eyebrows?

Their main function is hypothesized to prevent sweat, water, and other debris from falling down into the eye socket, but they are also important to human communication and facial expression.

It is not uncommon for people to modify their eyebrows by means of hair addition, removal and makeup.

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04 Jan 2024 02:19

A fastened safety belt reduces the risk of death by 5 times.

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03 Jan 2024 06:49

​​What are Eye Floaters and Flashes?

Eye floaters and flashes are common visual phenomena that can occur due to changes in the gel-like substance within the eye called the vitreous humor. While they can be bothersome, they are usually harmless. Here's an explanation of each:

Eye Floaters: Floaters are tiny specks, spots, or strands that appear to float across your field of vision. They are most noticeable when looking at a plain background, such as a blank wall or the sky. Floaters are actually tiny clumps of gel or cells within the vitreous humor that cast shadows on the retina (the light-sensitive tissue at the back of the eye). They can appear as dots, circles, lines, or even cobweb-like shapes. Floaters are more common as you age, as the vitreous humor tends to become more liquid and can form small clumps.

Flashes: Flashes are brief, flickering sensations of light that can occur in the peripheral (side) vision. They may appear like lightning streaks or camera flashes. Flashes occur when the vitreous gel tugs or pulls on the retina, stimulating the light-sensitive cells. This can happen during normal eye movement or due to jarring movements, such as a blow to the head. Flashes may also be associated with other conditions, such as retinal detachment or posterior vitreous detachment, which require prompt medical attention.

The occurrence of eye floaters and flashes is mainly attributed to age-related changes in the vitreous humor. The gel-like substance can become more liquefied and develop small pockets or clumps over time. These clumps cast shadows on the retina, leading to the perception of floaters. As the vitreous humor undergoes changes, it can also exert traction on the retina, causing the sensation of flashes.

Other factors that may contribute to the development of floaters and flashes include:

- Eye injuries or trauma
- Eye inflammation or infection
- Diabetic eye disease
- Nearsightedness (myopia)
- Cataracts or cataract surgery
- Retinal tears or detachments

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03 Jan 2024 03:52

​​What is Muscle Fatigue?

At the start of exercising or when performing tasks, your muscles feel strong and resilient. However, over time and after repeating movements, your muscles may begin to feel weaker and tired. This can be defined as muscle fatigue.

Muscle fatigue is a symptom that decreases your muscles’ ability to perform over time. It can be associated with a state of exhaustion, often following strenuous activity or exercise. When you experience fatigue, the force behind your muscles’ movements decrease, causing you to feel weaker. Exercise and other physical activity are a common cause of muscle fatigue. Other possible causes of this symptom include: Addison’s disease age, anemia, anxiety, cerebral palsy, chronic fatigue syndrome (CFS), dehydration, depression, hepatitis C, HIV, influenza (the flu), lack of exercise, lactic acid production, medications, mineral deficiency, muscular dystrophy, myositis (muscle inflammation), poor muscle tone due to a medical condition, pregnancy, sleep deprivation, stroke, etc.

Muscle fatigue can occur anywhere on the body. An initial sign of this condition is muscle weakness. Other symptoms associated with muscle fatigue include: soreness, localized pain, shortness of breath, muscle twitching, trembling, a weak grip, muscle cramps. If you begin having difficulty performing daily tasks or if your symptoms worsen, seek immediate medical attention. This could be an indication of a more serious health condition.

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31 Dec 2023 06:30

What fish is the only one that can blink with both eyes?

A shark is the only fish that can blink with both eyes. Most fish do not have eyelids.

Only a few, like the shark, have nictitating eyelids, which consist of a membrane that closes over the eye like an upside-down eyelid.

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28 Dec 2023 09:16

Which animal has the best sense of smell?

An elephant's trunk is not only long, it is packed with five times more smell receptors than humans.

And now research has found that the African elephants have the greatest sense of smell among mammals - even beating dogs including the bloodhound renowned for its sniffing ability.

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24 Dec 2023 12:23

Where does the name Nokia come from ?

According to Wikipedia, The company's name came from the Nokia town situated on the banks of the Nokianvirta River.

The company started as a wood-pulp mill, and expanded into producing rubber products in the Finnish city of Nokia.

The company later adopted the city's name.

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17 Dec 2023 04:58

What happens during fruit ripening ?

The action of the enzymes cause the ripening responses.

Chlorophyll is broken down and sometimes new pigments are made so that the fruit skin changes color from green to red, yellow, or blue.

Acids are broken down so that the fruit changes from sour to neutral.

The degradation of starch by amylase produces sugar.

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16 Dec 2023 17:48

How to prevail in an argument?

Pretty simple. Start accusing your opponent of something.

➖"You just don't respect me!"
➖"Why are you raising your voice?!"
➖"You don't understand me!"

👉 The main thing I advise is to say these kinds of phrases as calmly as possible. Well and the cherry on the cake is your beautiful exit in English, that is, just after the phrase, turn around and walk away. And no, you won't act like a fool.

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14 Dec 2023 06:57

Thank You All for Making My dream Come True..🙏

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14 Dec 2023 04:54

Where Desert meets the Sea?

The Southern Namib desert is home to some of the tallest and most spectacular dunes of the world, ranging in color from pink to vivid orange.

These dunes continue right to the edge of the Atlantic Ocean.

The cold waters of the sea brushing against the dunes of the Namib desert is one of the most surreal sights.

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11 Dec 2023 03:45

What Is Braille?

Braille is a system of raised dots that can be read with the fingers by people who are blind or who have low vision.

Teachers, parents, and others who are not visually impaired ordinarily read braille with their eyes.

Braille is not a language.

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09 Dec 2023 02:02

Why does hot oil splatter on pouring water ?

Oil heats up faster than water because it has a lower specific heat capacity.

As it reaches past boiling point of water as the water is denser than oil so its at the bottom.

Then it turns into steam and the steam expands splashing the oil everywhere.

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11 Jan 2024 03:18

Do Bananas have radiation?

Bananas are slightly radioactive because they contain potassium and potassium decays.

Potassium is a necessary substance for healthy operation of your body.

You would have to eat a LOT of bananas just to compete with the natural potassium dose of your body.

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10 Jan 2024 00:55

Why Use Salt When Hard Boiling Eggs?

The most common reason to add salt to water when hard boiling an egg is to the increase the temperature of the water for better cooking.

Evidence also suggests that salted water prevents an egg from cracking.

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05 Jan 2024 04:38

Which country located in two continents?

Istanbul is the city in the world located on two continents - Europe and Asia.

One part of Istanbul lies in Europe and the other part lies in Asia.

Istanbul's European part is separated from its Asian part by the Bosphorus strait, a 31-km-long waterway that connects the Black Sea with the Sea of Marmara, and forms a natural boundary between the two continents.

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04 Jan 2024 02:11

​​Why do Airplanes fly in a curve instead of straight forward?

Airplanes typically fly in curved paths for two main reasons: efficiency and safety.

Efficiency: Aircraft follow curved flight paths to take advantage of the Earth's rotation and the natural wind patterns in the atmosphere.

The Earth rotates from west to east, causing the air to move with it. This phenomenon is known as the Coriolis effect.

By flying in a curved path, aircraft can take advantage of the prevailing winds, which can significantly reduce fuel consumption and travel time.

These wind patterns are often referred to as jet streams. Pilots and airlines carefully plan routes to utilize these favorable winds, resulting in more efficient flights.

Safety: Another reason for flying in curved paths is safety.

Air traffic control systems are designed to manage the flow of aircraft efficiently and prevent collisions.

By following predetermined routes and flying in designated airways, pilots can maintain separation from other aircraft, minimizing the risk of mid-air collisions.

These airways are carefully planned to ensure safe distances between aircraft, and they often follow curved paths to facilitate this separation.

While airplanes may appear to fly in straight lines when viewed from the ground, their flight paths are typically a series of connected curved segments.

This allows them to optimize their routes for efficiency, taking into account the Earth's rotation and wind patterns, while still ensuring safety by adhering to established air traffic control procedures.

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03 Jan 2024 05:38

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🌟 High Accuracy Signals📊
🌟 Fundamental DD Analysis
🌟 Trading Course Available🎯
🌟 Account Management 🗄️

Join the Big Whales Fast ⏩

Don't miss it 👇 JOIN HERE 👇

#ad

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02 Jan 2024 02:31

Airplane footage of the Castle Bravo nuclear test, the largest nuclear bomb the US has detonated (15 Megatons)

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29 Dec 2023 06:11

Why is the left lung smaller than the right lung?

The left lung is slightly smaller than the right lung because 2/3 of the heart is located on the left side of the body.

The left lung contains the cardiac notch, an indentation in the lung that surrounds the apex of the heart.

Each lung consists of several distinct lobes.

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26 Dec 2023 17:03

How much time, new born baby takes to produce first tear?

Your new baby cannot cry. Your baby can scream and holler for what he/she wants or needs, but your baby cannot technically cry.

Tears can't actually be created or released until about three weeks.

However, sometimes it can take up to 4 or 5 months for a baby to produce their first tears – and remember, whether 3 weeks or 5 months, this is all normal.

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20 Dec 2023 13:02

How many months before you can tell the sex of the baby?

This is one of the most common questions I receive from parents-to-be.

Most patients undergo an ultrasound at around 18-20 weeks (about four and a half to five months).

Normally, at this stage of pregnancy we can determine the baby's sex, but not always.

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16 Dec 2023 18:09

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14 Dec 2023 11:26

Best Times To Drink Water:

2 glasses after waking up -helps activate internal organs.

1 glass 30 minutes before a meal-helps digestion.

1 glass before taking a shower -helps lower blood pressure.

1 glass before going to bed -helps avoid stroke or heart attack.
🚰🚰🚰🚰🚰

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14 Dec 2023 06:54

Dimples on the cheeks are actually a genetic defect.

They mean that the muscles didn't grow properly and hollows formed between them.

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13 Dec 2023 04:40

Who invented E-Mail?

V.A. Shiva Ayyadurai.
In 1978, a 14-year-old named V.A. Shiva Ayyadurai developed a computer program, which replicated the features of the interoffice, inter-organizational paper mail system.

He named his program “EMAIL”. Shiva filed an application for copyright in his program and in 1982 the United States Copyright Office issued a Certificate of Registration, No. TXu-111-775, to him on the program. 

In the summer of 1978, Shiva had been recruited for programming assignments at the University of Medicine and Dentistry of New Jersey (UMDNJ) in Newark, New Jersey. One of his supervisors, Dr. Leslie P. Michelson, recognized his abilities and challenged him to translate the conventional paper-based interoffice and inter-organizational communication system (i.e., paper-based mail and memoranda) to an electronic communication system. 

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10 Dec 2023 02:59

What is Bandwagon Effect ?

The bandwagon effect is a psychological phenomenon in which people do something primarily because other people are doing it, regardless of their own beliefs, which they may ignore or override.

The bandwagon effect has wide implications, but is commonly seen in politics and consumer behavior.

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09 Dec 2023 02:01

Why Use Salt When Hard Boiling Eggs?

The most common reason to add salt to water when hard boiling an egg is to the increase the temperature of the water for better cooking.

Evidence also suggests that salted waterprevents an egg from cracking.

Subscribe- @TodayILearn