Is evolution theory or fact?(part 2)

🔰Evolution is a theory.It is not a scientific fact or law.Many people learned in elementary school that a theory falls in the middle of a hierarchy of certainty-above a mere hypothesis but below a law.Scientists do not use the terms that way , however.

Do all life on earth shares same ancestor ?

🔰The answer is yes! LUCA that lived approximately 3.5-3.8 Billion years ago .The fossil record includes a progression from early biogenic graphite , to microbial mat fossils to fossilised multicellular organisms.

Note- existing patterns of biodiversity have been shaped by repeated formations of new species (speciation) throughout the evolutionary history of life on Earth . Morphological and biochemical traits are more similar amon species that share more recent common ancestor,and can be used to reconstruct phylogenetic trees.

THE NEXT IS QUESTION OF YOU ALL

What's the evidence for evolution?

Five basic evidences are 👇

1.ancient organisms remain
2.Fossil layers
3.similarities among organisms that are alive today
4.DNA simalarities
5.similarities of Embryo

What's importance of evolution?

🔰These evolution have led to major improvements in living standards ,public welfare,health and security.They have changed how we view the universe and how we think about ourselves in relation to the world around us . Biological evolution is one of the most important ideas of modern science.

🔰Their discoveries have influenced not just the development of biology but numerous other scientific and industrial fields, including agriculture, medicine, and computer science.

Upcoming (part 3)

After evolution I'll be dealing with topic on the poll accordingly

#Who_discovered_evolution? (Part three)

🔰Charles Darwin is commonly cited as the person who "discovered" evolution.But,. the historical record shows that roughly seventy different individuals pubished work on the topic of evolution between 1748 and 1859 ,the year that Darwin published on the origin of species.

🔰The theory of evolution by natural selection was conceived independently by Charles Darwin and Alfred Russel Wallace in the mid-19th century and was set out in detail in Darwin's book On the Origin of Species.

🔰Evolution by natural selection was first demonstrated by the observation that more offspring are often produced than can possibly survive. This is followed by three observable facts about living organisms:

(1) traits vary among individuals with respect to their morphology, physiology and behaviour (phenotypic variation),
(2) different traits confer different rates of survival and reproduction (differential fitness) and
[To be continued ]
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What's theory of Relativity🤓(part 1)

🔰One common analogy used to introduce general relativity is the ideas of a "mass on a rubber sheet" or "bowling ball on a trampoline" .The bending of surface caused by the mass pulling the sheet down is used to illustrate the curvature of spacetime in General relativity.

⚛Theory of Relativity explains structure of space time based on the principle of
1."Laws of physics are same for all observers in inertial frame of reference relative to one another"
2."speed of light in vacuum is the same for all observers, regardless of their relative motion or if the motion of light source."
3."states of accelerated motion and being at rest in gravitational field (for example:when standing on Earth's surface) are physically identical "


🔰The theory of relativity usually encompassed two interrelated theories.


#special_relativity
Special relativity is a theory that applies to all physical phenomena in the absence of gravity. It's a theory of structure of #spacetime , practically based on two postulate s which are contradictory in classical mechanics.

👉laws of physics are same for all observers in any inertial #frame_of_reference relative to one another.

👉
The #speed_of_light in a vacuum is the same for all observers,regardless of their relative motion of of the motion of light source.

The resultant theory copes with experiment better than classical mechanics. For instance, postulate 2 explains the results of the #Michelson_Morley experiment . Moreover, the theory has many surprising and counterintuitive consequences.


But before looking at it's consequences let's see the following term .

#Frame_of_reference:In physics, a frame of reference consists of an abstract coordinate system and the set of physical reference points that uniquely fix the coordinate system and standardize measurements within that frame.

#Light_speed : It's the max and possible speed (not hypothetical) that a particle with no rest mass (photon) can acquire.

[To be continued]

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Frequently asked questions on BigBang theory 🤓

🔰Is BigBang fact or theory ?

🔰Who coined this theory ?

🔰What's the evidence of BigBang?

🔰Did Time exist before BigBang?

🔰Are there alternatives to BigBang?

🔰What is the currently most accepted model for the universe?

🔰Why BigBang is widely accepted?And what makes it special from other related theories ?

🔰What are the unresolved problems of Bigbang?

🔰Does the steady-state theory still have validity?

🔰Why is the steady-state theory not accepted?

🔰Do you think better hypothesis will be drafted ?


These are other necessary questions raised on BigBang will be answered. Stay tuned!

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[continued]
Counteractive Consequences of Special relativity


🔰Relativity of simultaneity: Two events, simultaneous for one observer, may not be simultaneous for another observer if the observers are in relative motion.
🔰Time dilation: Moving clocks are measured to tick more slowly than an observer's "stationary" clock.
🔰Length contraction: Objects are measured to be shortened in the direction that they are moving with respect to the observer.
🔰Maximum speed is finite : No physical object, message or field line can travel faster than the speed of light in a vacuum.
The effect of gravity can only travel through space at the speed of light, not faster or instantaneously.

🔰Mass-energy equivalence : E = mc², energy and mass are equivalent and transmutable.

#Relativistic_mass , idea used by some researchers.
The defining feature of special relativity is the replacement of the Galilean transformation of classical mechanics by the Lorentz transformation .


Find out more about these consequences
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Who coined the idea ?(part 2)

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Who coined relativity?(part 2)

🔰Albert Einstein was scientist who coined published the theory of relativity. Special relativity was published by 1915.


🔰 Follow up by 1916,Albert published his general theory of relativity in full mathematical detail .That opened the window on a radically new framework for physics, abolishing established notions of space and time and replacing Newton's formulation of the laws of gravity .


General relativity

🔰General relativity is a theory of gravitation developed by Einstein in the years 1907–1915. The development of general relativity began with the equivalence principle, under which the states of  accelerated motion and being at rest in a gravitational field  (for example, when standing on the surface of the Earth) are physically identical.

[To be continued]

BigBang theory

🔰As a child every one of us have enthusiasm knowing how and why things happened and are shaped in their present posture. And as a science nerd , we have a lot of unanswered questions we have raised for our family, religious leaders or friends .

🔰Some might have chosen to give us awful answers , that are fabricated , even raise more questions than persuading.We call such one #superstitions.

Superstitions:belief or practice resulting from ignorance, fear of the unknown, trust in magic or chance, or a false conception of causation.

🔰Me and most of my friends are inspired by different sci-fi books and movies, and our triggering question of when do the universe created ? And do really time is phenomena that appeared after creation of universe?

🔰 We stick to religious views,by trying to offend the scientific view because it objects religious beliefs like eternal existence of universe on one hand and a less than 6000 years universe on the other .


🔰Our trajectory, is using BigBang is clear false, because it assumes beginning of time exactly at that moment and not before , which is obstacle for a question of what was before BigBang.

Anyway this is all miscarriage we made in past , but what is BigBang?🤔

Theory
In short, the hypothesis of BigBang states that all of the current and past matter in the Universe came into existence at the same time, roughly 13.8B years ago.At this  time,all matter was compacted into a very small ball with infinite density and intense heat called a #singularity.

Is BigBang fact or theory?

🔰The answer seem clear as explained in the above sentence.It is a theory,beside alternative models ,it is the most widely accepted one.

[To be continued]

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