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ScienceABC Videos is the audio-visual wing of your favorite Science website. Here, we present you some of the whackiest ideas and scientific phenomena through animated videos in our signature style. Subscribe to our YouTube channel “ScienceABC” to never miss a video.

The Fibonacci sequence is a series of numbers in which a given number is the addition of the two numbers before it. So, if you start with 0, the next number will be 1, followed by 1, followed by 2, followed by 3 and so on. As you can see, every number in this series or sequence is obtained by adding the two preceding numbers. This simple series of numbers is referred to as the Fibonacci sequence for Fibonacci series. And individual numbers in this sequence are often called Fibonacci numbers.

To the uninitiated, it may just seem like a series of numbers, but the Fibonacci sequence has been discovered and rediscovered in various forms, not only in mathematics, but also in nature and our everyday lives. 

There’s another exciting offshoot of the Fibonacci sequence - the golden ratio. Seashells are one of the most common examples of the golden spiral in nature. Ocean waves, hurricanes, flower buds, snail shells, spider webs are some of the many naturally-occurring examples.

#science #animation #fibonacci

Intro - (0:00)
What is the Fibonacci sequence - (0:57)
Leonardo of Pisa and the Fibonacci sequence - (1:39)
Fibonacci sequence and the Golden Ratio - (2:56)

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The Fibonacci sequence is a series of numbers in which a given number is the addition of the two numbers before it. So, if you start with 0, the next number will be 1, followed by 1, followed by 2, followed by 3 and so on. As you can see, every number in this series or sequence is obtained by adding the two preceding numbers. This simple series of numbers is referred to as the Fibonacci sequence for Fibonacci series. And individual numbers in this sequence are often called Fibonacci numbers.

To the uninitiated, it may just seem like a series of numbers, but the Fibonacci sequence has been discovered and rediscovered in various forms, not only in mathematics, but also in nature and our everyday lives.

There’s another exciting offshoot of the Fibonacci sequence - the golden ratio. Seashells are one of the most common examples of the golden spiral in nature. Ocean waves, hurricanes, flower buds, snail shells, spider webs are some of the many naturally-occurring examples.

#science #animation #fibonacci

Intro - (0:00)
What is the Fibonacci sequence - (0:57)
Leonardo of Pisa and the Fibonacci sequence - (1:39)
Fibonacci sequence and the Golden Ratio - (2:56)

SUBSCRIBE to get more such science videos!
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YouTube Video VVVjTjNJdUlBUjZGbjc0RldNUWY2bEZBLjJ0djZFajZKVmhv

What is the Fibonacci Sequence & the Golden Ratio? Simple Explanation and Examples in Everyday Life

Science ABC April 23, 2021 4:00 pm

Digestive System: Ingestion to Egestion Explained in Simple Words

Science ABC April 5, 2021 4:00 pm

Why Is It A Bad Idea To Stay In Bed For Too Long?

Science ABC April 1, 2021 5:31 pm

Radioactivity is the property through which a heavier, unstable nucleus assumes a more stable state by emitting radiation. The process through which a nucleus turns into a stable one is called radioactive decay. But is radioactivity or radioactive radiation always harmful? Let’s discuss this in more detail.
Inside an atom’s nucleus, there are positively charged protons and neutral neutrons. These nucleons are held together by a “glue” called the strong nuclear force. This strong force cancels out the repulsive electrostatic force of like charged protons and keeps the nucleus stable. The nuclear force has a short range of action and is dependent on the ratio of neutrons and protons present in a nucleus. However, we see that the balance between the forces starts to waver in a nucleus where the number of neutrons exceeds the number of protons. A nucleus that exceeds the threshold number of neutrons and protons that the strong nuclear force can hold together comfortably will be more unstable.
More specifically, these scenarios give rise to unstable isotopes of elements. Just as your body, through a series of expansions and contractions, expels a substance with a sneeze, similarly, the unstable isotopes of elements fling out different particles or forms of energy to restore balance between the forces in their nucleus. During this process of attaining stability, they change into a new nucleus. It is exactly this property, namely turning into something new to attain stability, that we call radioactivity. 


#science #animation #radioactivity


References
https://www.epa.gov/radiation/what-kinds-consumer-products-contain-radioactive-materials
https://bioethicsarchive.georgetown.edu/achre/final/intro_9_2.html
https://wou.edu/chemistry/courses/online-chemistry-textbooks/ch103-allied-health-chemistry/ch103-chapter-3-radioactivity/
https://ehss.energy.gov/ohre/roadmap/achre/intro_9_2.html
https://www.nj.gov/dep/rpp/llrw/download/fact01.pdf




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Radioactivity is the property through which a heavier, unstable nucleus assumes a more stable state by emitting radiation. The process through which a nucleus turns into a stable one is called radioactive decay. But is radioactivity or radioactive radiation always harmful? Let’s discuss this in more detail.
Inside an atom’s nucleus, there are positively charged protons and neutral neutrons. These nucleons are held together by a “glue” called the strong nuclear force. This strong force cancels out the repulsive electrostatic force of like charged protons and keeps the nucleus stable. The nuclear force has a short range of action and is dependent on the ratio of neutrons and protons present in a nucleus. However, we see that the balance between the forces starts to waver in a nucleus where the number of neutrons exceeds the number of protons. A nucleus that exceeds the threshold number of neutrons and protons that the strong nuclear force can hold together comfortably will be more unstable.
More specifically, these scenarios give rise to unstable isotopes of elements. Just as your body, through a series of expansions and contractions, expels a substance with a sneeze, similarly, the unstable isotopes of elements fling out different particles or forms of energy to restore balance between the forces in their nucleus. During this process of attaining stability, they change into a new nucleus. It is exactly this property, namely turning into something new to attain stability, that we call radioactivity.


#science #animation #radioactivity


References
https://www.epa.gov/radiation/what-kinds-consumer-products-contain-radioactive-materials
https://bioethicsarchive.georgetown.edu/achre/final/intro_9_2.html
https://wou.edu/chemistry/courses/online-chemistry-textbooks/ch103-allied-health-chemistry/ch103-chapter-3-radioactivity/
https://ehss.energy.gov/ohre/roadmap/achre/intro_9_2.html
https://www.nj.gov/dep/rpp/llrw/download/fact01.pdf




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YouTube Video VVVjTjNJdUlBUjZGbjc0RldNUWY2bEZBLk0wdXc0Wk5wcWNJ

What is Radioactivity and Is It Always Harmful: Explained in Really Simple Words

Science ABC March 10, 2021 5:53 pm

The grandfather paradox is considered the biggest, most popular objection to the logical possibility of backwards time travel. It characterizes a hypothetical situation in which a time traveller goes to their past and ends up causing an event (like, the killing of their grandfather) which makes travelling to the past and altering it impossible.
What this means is that if you go back in time and kill your grandfather, you don’t exist, which means that your grandfather cannot be killed. As you can see, there are two realities occurring in parallel here. The grandfather paradox is also a key plot element in the famous Hollywood movie Tenet (released in 2020), directed by Christopher Nolan.
Although all this talk about time travel and the grandfather paradox is obviously purely hypothetical, there is evidence of two realities occurring in parallel at the same time. This is a phenomenon in the quantum world which is known as superposition.


Table of Content:


Intro: 0:00
The Problem of travelling to the past: 0:58
What's the Grandfather paradox: 1:19
What is superposition: 3:25
Is travelling to the past possible?: 3:54


#science #animation #grandfatherparadox



Quantum Entanglement Video link: https://youtu.be/fkAAbXPEAtU




References:
https://plato.stanford.edu/entries/time-travel/#WheTimTra

http://people.bu.edu/pbokulic/papers/BHC-Hawk-PSA.pdf
https://physics.berkeley.edu/news-events/news/20201108/the-black-hole-paradox-nears-its-end
http://ffden-2.phys.uaf.edu/webproj/212_spring_2019/Noah_Snelson/index.html


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The grandfather paradox is considered the biggest, most popular objection to the logical possibility of backwards time travel. It characterizes a hypothetical situation in which a time traveller goes to their past and ends up causing an event (like, the killing of their grandfather) which makes travelling to the past and altering it impossible.
What this means is that if you go back in time and kill your grandfather, you don’t exist, which means that your grandfather cannot be killed. As you can see, there are two realities occurring in parallel here. The grandfather paradox is also a key plot element in the famous Hollywood movie Tenet (released in 2020), directed by Christopher Nolan.
Although all this talk about time travel and the grandfather paradox is obviously purely hypothetical, there is evidence of two realities occurring in parallel at the same time. This is a phenomenon in the quantum world which is known as superposition.


Table of Content:


Intro: 0:00
The Problem of travelling to the past: 0:58
What's the Grandfather paradox: 1:19
What is superposition: 3:25
Is travelling to the past possible?: 3:54


#science #animation #grandfatherparadox



Quantum Entanglement Video link: https://youtu.be/fkAAbXPEAtU




References:
https://plato.stanford.edu/entries/time-travel/#WheTimTra

http://people.bu.edu/pbokulic/papers/BHC-Hawk-PSA.pdf
https://physics.berkeley.edu/news-events/news/20201108/the-black-hole-paradox-nears-its-end
http://ffden-2.phys.uaf.edu/webproj/212_spring_2019/Noah_Snelson/index.html


SUBSCRIBE to get more such science videos!
https://www.youtube.com/channel/UCcN3IuIAR6Fn74FWMQf6lFA?sub_confirmation=1

Follow us on Twitter!
https://twitter.com/abc_science

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https://facebook.com/sciabc

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https://www.scienceabc.com

YouTube Video VVVjTjNJdUlBUjZGbjc0RldNUWY2bEZBLk1LYkYtTXZSakVV

Grandfather Paradox: Explained in Simple Words

Science ABC February 1, 2021 4:00 pm

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