Because of the Coriolis effect:
Shooting to the North, the bullet deviates Est. That is in Europe or the US.
When in Australia, shooting to the North the deviation is West.
Shooting to the North, the bullet deviates Est. That is in Europe or the US.
When in Australia, shooting to the North the deviation is West.
@system7 once supplied a reference to a historical incident involving ballistics and the Coriolis effect:
"During the naval engagement near the Falkland Islands which occurred early in World War I, the British gunners were surprised to see their accurately aimed salvos falling 100 yards to the left of the German ships.
The designers of the sighting mechanisms were well aware of the Coriolis deflection and had carefully taken this into account, but they apparently were under the impression that all sea battles took place near 50 degrees North latitude and never near 50 degrees South latitude.
The British shots, therefore, fell at a distance from the targets equal to twice the Coriolis deflection."
(Classical Dynamics of Particles and Systems, Second Edition — by Jerry B. Marion, Academic Press, Inc., 1970, p.346 fn.)
"During the naval engagement near the Falkland Islands which occurred early in World War I, the British gunners were surprised to see their accurately aimed salvos falling 100 yards to the left of the German ships.
The designers of the sighting mechanisms were well aware of the Coriolis deflection and had carefully taken this into account, but they apparently were under the impression that all sea battles took place near 50 degrees North latitude and never near 50 degrees South latitude.
The British shots, therefore, fell at a distance from the targets equal to twice the Coriolis deflection."
(Classical Dynamics of Particles and Systems, Second Edition — by Jerry B. Marion, Academic Press, Inc., 1970, p.346 fn.)
Well, in the North hemisphere the Coriolis effect strenth varies with latitude. I presume, engineering of the sighting mecanism took care of this; Strange, they forgot to change some signe for the South hemisphere.
Another war event mentioned about the Coriolis effect is the gunning of Paris by the Germans with a huge long distance gun, the scared french named "la grosse Bertha".
Target shooters do not care about Coriolis, there are other stronger effects to deflect. Side wind and Magnus effect from the hight speed rotation to stabilité the bullet.
Another war event mentioned about the Coriolis effect is the gunning of Paris by the Germans with a huge long distance gun, the scared french named "la grosse Bertha".
Target shooters do not care about Coriolis, there are other stronger effects to deflect. Side wind and Magnus effect from the hight speed rotation to stabilité the bullet.
Clearly a completely fictitious force then? 😂
Some history (from Wikipedia)
Image from Cursus seu Mundus Mathematicus(1674) of C.F.M. Dechales, showing how a cannonball should deflect to the right of its target on a rotating Earth, because the rightward motion of the ball is faster than that of the tower.
Image from Cursus seu Mundus Mathematicus(1674) of C.F.M. Dechales, showing how a ball should fall from a tower on a rotating Earth. The ball is released from F. The top of the tower moves faster than its base, so while the ball falls, the base of the tower moves to I, but the ball, which has the eastward speed of the tower's top, outruns the tower's base and lands further to the east at L.Italian scientist Giovanni Battista Riccioli and his assistant Francesco Maria Grimaldi described the effect in connection with artillery in the 1651 Almagestum Novum, writing that rotation of the Earth should cause a cannonball fired to the north to deflect to the east.[2] In 1674, Claude François Milliet Dechales described in his Cursus seu Mundus Mathematicus how the rotation of the Earth should cause a deflection in the trajectories of both falling bodies and projectiles aimed toward one of the planet's poles. Riccioli, Grimaldi, and Dechales all described the effect as part of an argument against the heliocentric system of Copernicus. In other words, they argued that the Earth's rotation should create the effect, and so failure to detect the effect was evidence for an immobile Earth.[3]The Coriolis acceleration equation was derived by Euler in 1749,[4][5] and the effect was described in the tidal equations of Pierre-Simon Laplace in 1778.[6]
Clearly, because it is a by-product of measuring coordinates with respect to a rotating coordinate system as opposed to an actual "push or pull".
^Tropical cyclones?
Tropical cyclones, or hurricanes as they are called north of the equator, contain low pressures, and wind blows toward any region of low pressure.
In simple terms:
In the southern hemisphere, these inward winds are deflected to the left, causing tropical cyclones to rotate in the clockwise direction.
In the northern hemisphere, these inward winds are deflected to the right, causing hurricanes to rotate in the counterclockwise direction.
Tropical cyclones, or hurricanes as they are called north of the equator, contain low pressures, and wind blows toward any region of low pressure.
In simple terms:
In the southern hemisphere, these inward winds are deflected to the left, causing tropical cyclones to rotate in the clockwise direction.
In the northern hemisphere, these inward winds are deflected to the right, causing hurricanes to rotate in the counterclockwise direction.
Why does thinking about 'dark photons' get me down? 🤓
Particle physicists at the Large Hadron Collider are looking at the possibility of dark photon production in the decay of Higgs bosons.
https://scitechdaily.com/the-myster...particle-hunt-with-the-large-hadron-collider/
A dark photon is a hypothetical particle that might bridge the gap between the elusive dark sector of particles and regular matter.
Dark photons are called 'exotic' particles because they are not part of the Standard Model of particle physics.
Particle physicists at the Large Hadron Collider are looking at the possibility of dark photon production in the decay of Higgs bosons.
https://scitechdaily.com/the-myster...particle-hunt-with-the-large-hadron-collider/
A dark photon is a hypothetical particle that might bridge the gap between the elusive dark sector of particles and regular matter.
Dark photons are called 'exotic' particles because they are not part of the Standard Model of particle physics.
Researching further:
Dark matter candidates that lie within the Standard Model category, but have borne no fruit, include WIMPs and axions.
In recent years, other dark matter candidates have emerged that lie in a category known as the 'dark sector' or 'hidden sector'.
Dark-sector particles live in a dark universe of their own and interact occasionally with normal matter via a hypothetical messenger particle such as the dark photon.
https://magazine.caltech.edu/post/where-is-dark-matter-hiding
Dark matter candidates that lie within the Standard Model category, but have borne no fruit, include WIMPs and axions.
In recent years, other dark matter candidates have emerged that lie in a category known as the 'dark sector' or 'hidden sector'.
Dark-sector particles live in a dark universe of their own and interact occasionally with normal matter via a hypothetical messenger particle such as the dark photon.
https://magazine.caltech.edu/post/where-is-dark-matter-hiding
I was trying to wrap my head round that very surprising turntable and ball experimemnt experiment.
It's not bogus science by Steve Mould, even if the perpetual motion video was.
Mach's principle says rotation is relative to the fixed distant stars through some sort of fixed Spacetime:
https://en.wikipedia.org/wiki/Mach's_principle
I was curious why Steve Mould got a 7:2 ratio with a solid kid's pool ball, and a 5:2 with a hollow ping pong ball.
5:2 ratio also appears in Foucault's pendulum maths! Another rotation experiment. It's to do with the moments of inertia of the balls.
https://en.wikipedia.org/wiki/Lense%E2%80%93Thirring_precession#Example:_Foucault's_pendulum
I always find things like the 1:2:4 ratio of orbits of Io, Europa and Ganymede around Jupiter interesting. So are these ratios.
Almost Quantum coming out of Classical mechanics! 😎
It's not bogus science by Steve Mould, even if the perpetual motion video was.
Mach's principle says rotation is relative to the fixed distant stars through some sort of fixed Spacetime:
https://en.wikipedia.org/wiki/Mach's_principle
I was curious why Steve Mould got a 7:2 ratio with a solid kid's pool ball, and a 5:2 with a hollow ping pong ball.
5:2 ratio also appears in Foucault's pendulum maths! Another rotation experiment. It's to do with the moments of inertia of the balls.
https://en.wikipedia.org/wiki/Lense%E2%80%93Thirring_precession#Example:_Foucault's_pendulum
I always find things like the 1:2:4 ratio of orbits of Io, Europa and Ganymede around Jupiter interesting. So are these ratios.
Almost Quantum coming out of Classical mechanics! 😎
For a sphere with moment of inertia I = N m a^2, Mould's ratio is N/(1 +N).
For a uniform sphere N = 2/5, hence Mould's ratio is [2/5 divided by (1 + 2/5)] = 0.2857142 = 2/7.
For a hollow sphere N = 2/3, hence Mould's ratio is [2/3 divided by (1 + 2/3)] = 0.3999999 = 4/10 = 2/5.
'Spoons are doing a haggis and beef burger dish this week for about £10... I skipped it when I saw it was over 1700 Calories.
Scots are trying to give us heart attacks... 🙁
Space News!
Da little Mars helicopter, Ingenuity, which we all liked so much has broken a blade... it won't fly again. AW.
https://www.nasa.gov/news-release/after-three-years-on-mars-nasas-ingenuity-helicopter-mission-ends/
Scots are trying to give us heart attacks... 🙁
Space News!
Da little Mars helicopter, Ingenuity, which we all liked so much has broken a blade... it won't fly again. AW.
https://www.nasa.gov/news-release/after-three-years-on-mars-nasas-ingenuity-helicopter-mission-ends/