What are the most fascinating science facts?

 Do you know this .

When you throw stone on water surface with revolutions at angle of 20 to 25 degree , stone will bounce on water twice or thrice or even more . It's rotation cause these bounces .

In America they held championship of stone skipping .

It's kind of fun and amazing mechanism to watch.

Can you imagine that this technique might be used to build the bomb ?

Yes it was.

During second world war Britain was facing heavy air attacks from Germany . To stop those attacks they will have to destroy their production line . Which was secured with anti aircraft gun and Radar . Generally these machinery industries require lots of water . To fulfill the need they built their industries near the dams .

In order to destroy the aircraft industries Britain need to destroy these dams.

• Möhne dam
• Eder dam
• Sorpe dam
• Ennepe dam

But it was too much difficult as all these dams have anti torpedo nets protecting it from any attack .

To destroy it one need to blast the bomb at the base of dam .

Britain developed special bomb for this named “bouncing bomb” which was invented by Burnes Willis .

Its shape was like drum . Its weight was around 4000 kg . It's released at Target with 500 rpm . This will help to skip on the water . And after reaching to the wall of dam it's revolutions help it to stick to the wall . This bomb now acts as a depth charge . After reaching to certain depth it will blow up.

Britain was successful to slow down German aircraft production by attacking with these bombs .

It had a great impact on WW2.

What are the most fascinating science facts?

 Caution: Pictorial answer here-

There is a moon out there, very similar to earth. It comprises of oceans, lakes, rivers, mountains and a hydrological cycle (rain cycle).

“Then why is Elon Musk planning his colony on Mars?”, you may ask.

The only teeny tiny problem is that all the lakes, rivers, oceans and even rains are of Methane and ethane.

The name of the moon is Titan (not where Thanos is from). It is a natural satellite of Saturn.

A day on Titan may look like this.

• You could fly in its sky

Titan’s thick atmosphere, low gravity (less than our Moon) and reasonable surface pressure (50% of Earth’s) mean that, by flapping a pair of wings strapped to your arms, you could fly in its skies with no more effort than walking.

• It’s the only other world with liquid (that we know of)

Aside from Earth, Titan is the only world we know of that has liquids on its surface. These are in the form of lakes and rivers composed of liquid hydrocarbons including Ontario Lacus, a lake 240 kilometer (150 mile) long in Titan’s southern hemisphere.

• It has a climate system like Earth

The liquids on Titan undergo a similar cycle to water here on Earth. Liquid methane evaporates from the surface, forming extremely thick clouds in the skies, before eventually raining down and replenishing the lakes and rivers on the ground.

• We’ve landed on it, and we will again

The Saturn-orbiting spacecraft Cassini carried with it the Huygens probe, which landed on Titan (our only landing in the outer Solar System) on 14 January 2005. There are proposals being discussed for another landing, this time possibly using a boat.

References: Space Fact

What's the science behind samudra manthan?

 When Devtas lost their powers as Sage Durvasa cursed Indra. The Asurs took this as a great opportunity to attack Swarg-lok. The Devtas were powerless and thus lost the war and flewed from heavens to save their lives. They went to Brahama to seek help, who in turn them to Vishnu.

Lord Vishnu advised them to treat Asurs in a diplomatic manner. Devtas formed an alliance with Asurs to jointly churn the ocean for the nectar of immortality and to share it among them. Vishnu told Devtas that he would arrange such that they alone obtain the nectar.

The ocean was nothing but the Ksheer Sagar, the middle part of Garbodhaka Ocean where cosmic Vishnu resides. The churning of the Ksheer Sagar was an elaborate process. Mount Mandara was used as the churning rod, and Vasuki, the king of serpents, who abides on Shiva's neck, became the churning rope. The Asurs demanded to hold the head of the snake, while the gods taking advice from Vishnu, agreed to hold its tail.

As a result, the Asurs were poisoned by fumes emitted by Vasuki. Despite this, the gods and demons pulled back and forth on the snake's body alternately, causing the mountain to rotate, which in turn churned the Ksheer Sagar.

Actually, Samudra Manthan is nothing but the drilling of Ksheer Sagar bed where maximum density of dark matter exists. Driiling was done with the help of Nuclear power and the poisonous fumes emiited by Vasuki was nothing but the liberation of radiation from nuclear reactor present in this drill setup.

Devtas negotiated with Asurs inorder to fulfil the complete requirement of enriched nuclear material as Asurs had big source of enriched nuclear material as many of underworld and Patal Lokas were ruled by Asurs.

It is a great possibility that bottom of this drill setup or so called mount Mandara is equipped with a stationary drill bit which is kept at 1,00,000°C to 1,50,000°C). The molten ocean bed is pushed around the edges as the drill is forced downward. Massive amount of energy was required to heat the drill head and hence nuclear reactor came into play for generating controlled nuclear energy resulting in immense amount of radiation.

When Asurs realised that they have been tricked by Indra by giving the head side of Vasuki to them. Asurs knew that spontaneous emission of poisonous fumes while drilling can kill all the Asurs. Hence, they speeded up the drilling process due to which Halahal (Lethal Poison) came out from the mouth of Vasuki. Technically, it is nothing but the leakage of radiation due to extra throttle of the machinery given by Asurs. Later it was neutralized by Lord Shiva. Pouring of milk on shiv linga is a scienthific respresentation of cooling of nuclear reactor due to absorption of extra radiation / Halahal by lord shiva during samudra manthan.

This is the reason milk poured on shiv ling is never given as a Prasad because it indicates the byproduct of a nuclear reactor. This is the reason that ancient theories relate shiv ling to modern nuclear reactors.

What are some myths people believe about science that are taught by sci-fi movies but aren't true?

 Cryosleep.

A lot of people believes that we will be able to achieve cryosleep like in sci - fi movies.

In the movie Avatar, Passenger, Aliens, Interstellar etc, we have an entire pods of human beings put to sleep.

Cryosleep is basically impossible because when a person is frozen, they would be sleeping forever because we have no means to restart our brain.

Freezing causes water to crystallize. The ice crystals that form will completely destroys the cell's structure and end up shredding your tissues.

There are only a handful of animals on Earth that can be fully frozen and make it out alive.

Hibernation may be possible by drastically reducing a person’s metabolism. The key to these technologies is finding ways to slow down cell replication with the body during these periods, which effectively tricks the body into forgetting that it is aging.

There are chemical compounds and medicines that are being examined but they will be difficult to test without accidentally killing a lot of the subjects. Realistically, we are still a long way off from but it’s not completely off the table.

What are the most fascinating science facts?

 

1. Our bone marrow makes around 2 million red blood cells every second.
2. A single red blood cell can carry about one billion packets of oxygen around your body. You have around 25 trillion red blood cells …….. so that is too much of oxygen.
3. One drop of blood contains around 5 million RBC’s.
4. Your heart will beat more than 3 billion times if you live to old age and will have pumped enough blood to fill an oil tanker 46 times over.

5. Scientist can use one strand of hair to find out a person’s age , sex and race.

6. A brain weighs about 1.4 kg but if all water were squeezed out of it it would be just 283 gms.

7. Within the troposphere the air temperature drops by about 6.5 degree C per 1000 m of altitude.

8. An average lightning storm can discharge enough energy to supply the entire USA with electricity for 26 minutes.

9. A melting iceberg makes a fizzy sound known as ‘ Bergie Seltzer ‘ . It is caused by trapped air bubbles that pop as they are released.

10. The temperature of most of the Universe is -270 d. C and only 3 degrees warmer than the coldest temperature possible.

11. Even on the clearest darkest night you can see fewer than

1 / 100,000,000,000,000,000 of stars in the Universe.

12. A pinhead sized speck of gas from our Sun could kill a man 160 km away.

BONUS FACT - Most comets have two streaming tails - A blue one made of gas and white one made of dust.

All for today. Enjoy !!!!

Source - Ripley books.

Which science-related photos are hard to believe but are real?

 Some of these photos will make you doubt their validity! Look at the goods, they are special!

• 1. Cut cancer

This cancer cell was opened using an ion beam. The beam blew up part of the cell to reveal a cross section and cut a triangular shape into the surface of the silica substrate on which it rests. The technique, called ion beam milling, allows researchers to look inside cancer cells in unprecedented detail.

• 2. A high-performance boat

This boat-shaped particle is 30 micrometers long and can propel itself by chemical reaction. The researchers 3D printed the particle and covered it with metal. This catalyzes a reaction in the hydrogen peroxide solution the particle is in, to produce a gas that pushes it.

• 3. Pollution and corona

Monkeys in Malaysia hold a medical mask. Protective clothing has become a part of daily life for many amid the coronavirus pandemic. Environmentalists fear that disposable items could contribute significantly to plastic pollution.

• 4. Clownfish

An embryonic clownfish (Amphiprion percula) grows inside its egg. These remarkably detailed images were captured on days one, three, five and nine of its development; the first was taken hours after fertilization. Photographer Daniel Knop won second place in the Nikon Small World photomicrography competition.

Is astrology a real science?

 Astrology is called Pseudoscience.

For example: Let’s take Solar eclipse and see what Astrology and Astronomy say about the same.

Solar eclipse :

Scientific explanation: A solar eclipse occurs when the moon gets between Earth and the sun, and the moon casts a shadow over Earth

Astrology’s take on Solar eclipse :

Let’s take Hindu astrology for example :

The Hindu mythology says Solar eclipse is caused by Asura Svarbhanu (Snake) who pierced the sun (according to rigveda)

According to Puranas (the post Vedic texts) : Svarbhanu disguised himself as a Deva to drink the Amrita (nectar of immortality). So, Lord Vishnu who was in his Mohini form beheaded the demon Svarbhanu - now he was split into two entities: Rahu and Ketu.

Rahu - the head of the snake or dragon , Ketu - the tail of the dragon. The head which is Rahu is in eternal cosmic journey around the Sun(he is chasing the Sun) and sometimes catches and swallows Sun and moon causing Solar and Lunar eclipses.

Rahu and Ketu are called the Lunar nodes.

Basically, Lunar node is the point at which the Moon, Sun and Earth are in the same plane.

Rahu causing a Solar eclipse:

In western Astrology this is called Caput Draconis and Cauda Draconis :

credit : Google images

Rahu (the ascending node ) is called the Head of the Dragon and Ketu (the descending node ) is called tail of the Dragon.

9 Heavenly bodies of Indian Astrology :

Hindu astrology considers : the following as Nava Graha (nine heavenly bodies )

Sun, Moon, Mercury, Mar, Venus, Jupiter, Saturn, Rahu and Ketu ( Same as in Greek astrology)

Rahu and Ketu are considered as Shadow planets.

90 minutes of a day is allocated to Rahu and this time is considered as inauspicious time, it’s called Rahu Kaal.

People in India especially in the south, strictly observe the practice of avoiding starting any new work in Rahu Kaal.

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Looks like ancients were trying to figure out things, with the limited technology they had and were successful to an extent in predicting solar and lunar eclipses using Lunar nodes as references.

But, they didn’t actually know what caused the eclipses. This is why it’s called Pseudoscience.

Pseudoscience is a set of beliefs which claim to be scientific, but it lacks the method or fails to explain a phenomena as accurately as Real science.

What are the most fascinating science facts?

One thing that has, and always will fascinate me is Einstein’s Special Theory of Relativity, or more specifically, time dilation.

You might be wondering; what the hell is time dilation?

Well, time dilation is the slowing down of time due to gravitational fields or traveling at extremely high velocities.

Basically, that means that the faster you move, the slower time flows for you relative to everyone else. The same thing will happen if you are near a significant source of gravity (such as a neutron star or black hole).

But, as I mentioned earlier, time dilation is relative. If you were on a ship traveling near the speed of light, everything would appear normal to you. You wouldn’t move in slow motion. To you it would appear that everything outside your frame of reference (which is your perspective at your velocity) is aging quicker.

This gives rise to an interesting thought to me. Think about all the motion you’re currently experiencing.

You may be moving in a car, or walking somewhere.

You are also moving along the Earth’s axis as it rotates.

You are also moving along the Earth’s rotational path around the Sun.

You are also moving around the rotational axis of the Milky Way, around the supermassive black hole Sagittarius A.

And finally, you are also moving towards the galaxy Andromeda, along with the rest of the Milky Way.

Picture all of those different vectors and degrees of motion you’re experiencing.

Now imagine how time must be flowing for us compared to say, an outside observer who is stationary relative to the Milky Way.

To me, that is certainly a fascinating fact.

What are the most fascinating science facts?

 Something that is truly incomprehensible are the voids that occupies the space between the visible matter in the universe. Some voids appropriately called “Super Voids” can be millions of light-yeas across.

For example; The ‘Boötes Void’ — It’s 250 million light years of almost NOTHINGNESS.

Photo; Wikipedia

From this image it might not look that bad until you realize that almost all of the galaxies shown in the circle lie in front or behind it to date only 60 galaxies has been found within this void. A space that large could easily contain 10,000 galaxies when compared to other regions.

Just imagine if an alien civilization like our own exists on a planet within one of these galaxies the nearest neighbor would be tens of millions of light years away.. Even worse, if your planet is orbiting an intergalactic star, it’s a star or star system that has been ejected from its home galaxy and is now floating freely through the cosmos.

Photo; Wikipedia

2.

Magnetars is a form of extremely magnetic neutron stars from around 400 kilometers, the magnetic field would strip you of all metallic objects such as your phone, watch, belt, and so on.

And if you got really close it would eventually start ripping out the iron in your red blood cells out of your body.

3. There’s a weird correlation between the distance and size of the Sun and our Moon because during a solar eclipse..

the moon almost prefectly covers the Sun but there’s really no physical reason why this has to be the case. The moon just happens to be 400 times smaller than the Sun, but the Sun just happens to be 400 times further from the earth than the moon…

Another object we can see with the naked eye is the Andromeda galaxy, and it looks like a little something like this

Photo; Lemmino / Youtube

But because Andromeda is so far away, we only see the very bright center of it. If we could see all of Andromeda our skies could look like this, every night;

It would be several times larger than the moon even though it’s 2.5 million light years away.