The Real Coriolis Effect

[grayane]

The wind's gettin' a bit choppy. You can compensate for it, or you can wait it out, but he might leave before it dies down. It's your call. Remember what I've taught you. Keep in mind variable humidity and wind speed along the bullet's flight path. At this distance you'll also have to take the Coriolis Effect into account.

[w3ld3r]

LOOOLLLL notzaar

I found this video tryin to iunderstand why captain macMillan said that hahaha

and btw yeah it effetcs the bullet flight path since you can see the curv from the wind force on the smoke line but when it is about to hit it turns left and this is the coriolis effect!

[AmazinRace]

great work! excellent explanation!

[pendulum2007]

im sorry

did anyone see the movie shooter?

case closer

[Eviktion]

shooter was a good movie, and yes, it was correct, since the earth is spinning it seems your shooting at a target straight ahead, since it cant hit the target it appears to fly to the right instead of straight, so a shooter must aim approximately 3 click to the right to take the coriolis effect into play as said in the movie, which had alot of realism elements in it, but was not 100% true. Something like that would never happen, but, yeah, the coriolis effect has a effect on bullets and travel..

[pendulum2007]

wow

you know ur stuff man

and

you werent a complete jerk about it either

take it easy

[Eviktion]

you too man

[sparedes2008]

Very good video!!!

[davehypercaman]

please correct me if im wrong i calculated the curve on a bullet at 800 metres findings is as follows:Bullet speed=aprox 85 m p/sec Earth speed= aprox 0.005 metres p/sec so for every aprox 85 metres will give aprox 0.005 cent of curve =cod4 mission range = 800 ketres wich means 0.005x 8 wich equals 0.04 so in that case the coriolas effect on mission 1 shot 1 kill would meen the bullet should curve left or right by 0.04 of a centimetre

[gawbcity]

your calculations are just barely getting started. The earth's surface speed is zero at the poles & greatest on the equator, besides your projectile carries the instant vector component of the earth rotation as it sits in barrel of the rifle before it is fired. Where this stuff really comes into play is with artillery when projectiles are lofted high above the surface of the earth for long range fire. Now how long will it be before someone tells me I dont know what I am talking about?

[notzaar]

conclusion: the folks who made COD4 dont know shit (except how to make a nice fps) and were just trying to sound smart by using a math concept they barely understand.

[davehypercaman]

COD4 mission 1 shot 1 kill Mcmillan Quoted"you also have to take the corilis affect into account" before you sniped a target aprox 700- 800 metres away but would the coriolis effect even have any impact to a high velocity bullet fired from a high powered gun at that range?

[altabeh]

Yes it would have an affect on the bending of the trajectory of a highly speedy bullet since the velocity of the object is proportional to the Coriolis force. The point is that the distance has to also be taken into account as an important factor in the curvature of the trajectory of an object like this bullet we are talking about.

[dehgunny]

It does have an effect on the bullet, but unless you are at extremely long ranges (2000m +), it is negligible compared to other effects on the bullet, such as wind speed. The shot in CoD4 is only 800ish meters with a .50 cal, so i doubt any corrections aside from gravity and wind speed would really be needed. Furthermore, I don't think they even told you what latitude you were at or what bearing you were shooting at, so you couldn't correct for coriolis even if you knew how

[garakaldin]

I don't really think that the coriolis effect (acceleration) would have such a detrimental effect on the flight path of a bullet travelling at that speed , for that period of time and for that distance . But anyway , maybe I will try to do the calculations , anyone knows how far was the target in COD4? and the rifle was the Barret .50 cal?

[hititandquitit69]

how can this translate into sniping?meaning the coreolis affect intoi a bullet fire from a long range rifle?

[Urb4n0Ninj4]

You played Call of Duty 4 and wondered what is was when Lt. Price said "at this distance you'll have to take the coriolis effect into account as well," didn't you : )? That's why I'm here too! We are rotating with earth, so if you are a sniper shooting something 100 meters away with no wind at all, the bullet will appear to take a right or left curve depending on what hemisphere you are in. Watch the video of an example of them throwing a tennis ball on a merry-go-round, it's the same concept.

[dewalljp]

gee. how could i argue with such an intelligent opinion.

[somedude07]

tell him to go heil hitler.

[dewalljp]

Neglecting the earth's rotation, the pendulum in the stationary frame (left) always swings in one direction in accordance to Newton's second law (F=ma).

But if you're standing on the ship, the pendulum (apparently) curves. F=ma does not account for the sideways "force" that makes the pendulum curve.

To reconcile this, an imaginary force (the coriolis force) was invented that is added to the forces in F=ma. Then the physics makes sense.

[eldominicanboy]

ok ok im only a 13-year-old boy who is insterested in physics andd had a little mistake...is that too bad for you??

[dewalljp]

sorry. it's great you're interested in physics! for a better explanation, search for coriolis effect on wikipedia. good luck

[eldominicanboy]

iight then, thanks!

[BACHINA123]

wikipedia is paid to supply information. What they say isn't right all the time.

[eldominicanboy]

ok. what IS the coriolis effect?? is it the same ship on both pictures? cuz if it is then i get it using einstein's relativity.

[bardcrest]

I totally do not get what this is suppose to be showing.

[k0namiman]

this is showing the Coriolis Effect. This is an effect of motion, caused by rotation.

[frankcom2937]

i agree i do not get what turning ships and pendalums has to do with the c.e.

[dewalljp]

read the "about this video" description. the c.e. is an artificial force term added to Newtownian mechanics to describe rotating reference frames (like the ship on the right). The stationary view (left) is included for comparison. Both views were taken simultaneously.

[frankcom2937]

o ok ty =)