10 weird things scientists calculated in 2021

The world has equations, numbers and calculations. We use math every day. Scientists often go beyond the simple forms of counting to measure, weigh and tally things that are not in the ordinary. The number of bubbles in a glass of beer, the weight of the coronaviruses in the world, and many other weird things were calculated by scientists.

Large numbers define the universe.

Beer bubbles.

Brian Hagiwara is the photographer.

Thanks to some thirsty scientists, we know how many tiny bubbles formed when ice-cold beer is poured into a glass.
The scientists calculated that a half-pint glass of beer produces up to 2 million bubbles, which is twice as many as Champagne. The researchers found that the number of bubbles in a half-pint glass ranged from 200,000 to 2 million. The number of bubbles depends on three factors: the concentration of dissolved carbon dioxide in the glass, the volume of bubbles and the point at which the CO2 depletes. Tiny flaws in the glass would allow bubbles to emerge.

There are some good videos for you.

How many bubbles are in a glass of beer?

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The weight of the tiny, invisible particles that cause COVID-19 is between that of an apple and a young toddler, according to a study published in June. The calculation is based on the idea that each person carries 10 billion to 100 billion particles at the peak of their infections. The particles would weigh between 0.22 and 22 pounds if there were between 1 million and 10 million infections at any given time.

The researchers told Live Science that the viruses arewreaking havoc on the world.
How much does the world weigh?
Elephants are in space.

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A study published online in December of 2020 shows that researchers counted African elephants from space for the first time. The team combined high-resolution images of Addo Elephant National Park in South Africa captured by satellites that are 372 miles above Earth's surface. This technique can survey thousands of miles in minutes, which is much faster than the typical way of counting elephants in low-flying planes, which can take hours. The African elephant is a species that the International Union forConserving of Nature considers to be in danger.
Elephants are counted from space using satellites.

A finger snap.

Nisara Tangtrakul is the image credit.

Researchers used high-speed cameras and force sensors to figure out the fastest way to accelerate the human body. A study published in November in the Journal of the Royal Society Interface states that finger snaps generate maximal rotational velocities of 7,800 degrees per second and a maximal rotational acceleration of 1.6 million degrees per second squared. The finger snap's speed is three times that of a baseball player's arm.
"When I saw the data, I jumped out of my chair," said the study senior author, an assistant professor of chemical and biomolecular engineering at the Georgia Institute of Technology. The finger snap takes seven milliseconds, 20 times faster than the blink of an eye, and takes more than 150 milliseconds.
Scientists have found the fastest acceleration in the human body.

The pi is the most precise ever.

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One of the most famous irrational numbers is Pi, which means it can't be expressed as a common fraction and has an infinite number of digits after the decimal point. The most precise value of pi has been calculated by researchers in Switzerland. The calculations were done with a computer and took over 100 days to complete. Don't get too comfortable with this achievement. This record can be broken over and over again because of pi.
Pi was calculated to a record-breaking 62.8 trillion digits.

Your friends' popularity.

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The "friendship paradoxes" were first formulated in 1991 and say that your friends are more popular than you are. A group of mathematicians came up with a new theory that better describes real-world friends, according to a study published in May. "Averages are often highly misleading or at least can fail to describe people's experiences", said lead author George Cantwell. Some people are less popular than others.
The friendship paradoxes tends to be stronger in social networks made up of people with different levels of popularity, such as a high school, according to their new equations. If a person has two friends in the same social network as a person with 100 friends, it will be stronger than if the person has three friends.
The 'friendship paradoxes' don't always explain real friends, mathematicians say.

There are black holes.

The image is from NASA/JPL-Caltech.

How many black holes exist in the universe? These objects are so dense that no light can escape them. Astronomers have to use theoretical calculations because they can't detect all the black holes. According to NASA, a group of researchers calculated that there could be millions of small black holes in our universe, or the most immediate environment around the sun. The smaller black holes are more common than the larger ones. Black holes hold about 1% of all ordinary matter in the universe.
How many black holes exist in the universe?

Walking around the moon.

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How long would it take to walk around the moon? It depends on a number of factors, including how fast you walk and how much time you spend walking each day. It depends on whether you take detours. It would take about 90 days to walk the 6,786 miles around the moon at a speed of up to 3.1 mph. It's not possible to walk nonstop for a full month. A person would walk a few hours a day. It would take 1.5 years for a person to walk around the moon if they walked at this speed for 4 hours a day.

How long would it take to walk around the moon?

Satellites are on Earth.

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Live Science asked how many satellites are currently in the sky. Thousands of satellites have been lofted since Russia launched Sputnik in 1957. Between 10 to 60 were launched annually. More than 1,400 new satellites were sent to low Earth orbit in the next two years. Live Science reported that there were over 7,000 satellites in low Earth orbit as of September 2021.

How many satellites are in the sky?

The limit on the human life span is absolute.

The image is from www.victoriawlaka.com.

A study published in May in the journal Nature Communications said that the human life span may be 120 to 150 years. A group of researchers used a mathematical model to calculate the limit, which predicted that the body would lose its resilience after 120 to 150 years. The researchers said that if future therapies targeted and extended the body's resilience, humans might be able to live longer. The data for the study came from large data sets that contained medical data for more than half a million people. The researchers looked for the ratio of two types of disease-fighting white blood cells in the data.

Human life span may have an 'absolute limit'.

Live Science published the original article.