Dublinforum.net - Forum  

Go Back   Dublinforum.net - Forum > Topic Boards > Learning

Reply
 
Thread Tools Display Modes
  #91  
Old 16-11-2017, 10:29 PM
cogito's Avatar
cogito cogito is offline
Mod
 
Join Date: Oct 2009
Location: Plains of Royal Meath...
Posts: 8,667
Default

Quote:
Originally Posted by barefoot View Post
I lived in Oz for over 20 years and the water always went down the plughole in the opposite direction....but that was 17 years ago....things may have changed since then...lol...
It's down under... surely the water should pour out of the plug hole.
__________________
Everything is self-evident.
Reply With Quote Share with Facebook
  #92  
Old 16-11-2017, 11:11 PM
DAMNTHEWEATHER's Avatar
DAMNTHEWEATHER DAMNTHEWEATHER is offline
Silent Poster
 
Join Date: Oct 2009
Location: UK on the coast
Posts: 25,882
Default

Quote:
Originally Posted by DAMNTHEWEATHER View Post
Must be climate change ey?.
All will be revealed.....and the science of the down under water will be divulged very soon....watch this space....
__________________
WELL SHIVER ME TIMBERS
pieces of eight pieces of eight
Reply With Quote Share with Facebook
  #93  
Old 18-11-2017, 10:46 PM
Vico2 Vico2 is offline
Senior Member
 
Join Date: Dec 2015
Posts: 4,024
Default

According to the Scientific American, the following is the explanation:

"The tendency of a circulation in a fluid to develop in a clockwise direction in the Northern Hemisphere and a counterclockwise direction in the Southern Hemisphere can be traced to the earth's rotation. Imagine a cannon fired southward from any latitude above the equator. Its initial eastward motion is the same as that at a point on the spinning earth. This initial eastward velocity is less than that at a point later in its trajectory, because points closer to the equator travel in a bigger circle as the earth rotates. Therefore, the cannon shell is deflected westward (to the right), from the perspective of a person standing on the earth. A gunner firing a cannon northward would find that the shell is also deflected toward the right. These sideways deflections are attributed to the Coriolis force, although there really is no force involved--it is just an effect of being in a rotating reference frame.
Reply With Quote Share with Facebook
  #94  
Old 19-11-2017, 12:16 AM
DAMNTHEWEATHER's Avatar
DAMNTHEWEATHER DAMNTHEWEATHER is offline
Silent Poster
 
Join Date: Oct 2009
Location: UK on the coast
Posts: 25,882
Default

Quote:
Originally Posted by Vico2 View Post
According to the Scientific American, the following is the explanation:

"The tendency of a circulation in a fluid to develop in a clockwise direction in the Northern Hemisphere and a counterclockwise direction in the Southern Hemisphere can be traced to the earth's rotation. Imagine a cannon fired southward from any latitude above the equator. Its initial eastward motion is the same as that at a point on the spinning earth. This initial eastward velocity is less than that at a point later in its trajectory, because points closer to the equator travel in a bigger circle as the earth rotates. Therefore, the cannon shell is deflected westward (to the right), from the perspective of a person standing on the earth. A gunner firing a cannon northward would find that the shell is also deflected toward the right. These sideways deflections are attributed to the Coriolis force, although there really is no force involved--it is just an effect of being in a rotating reference frame.
Now yer gettin there......
__________________
WELL SHIVER ME TIMBERS
pieces of eight pieces of eight
Reply With Quote Share with Facebook
  #95  
Old 19-11-2017, 01:08 AM
cogito's Avatar
cogito cogito is offline
Mod
 
Join Date: Oct 2009
Location: Plains of Royal Meath...
Posts: 8,667
Default

Quote:
Originally Posted by Vico2 View Post
According to the Scientific American, the following is the explanation:

"The tendency of a circulation in a fluid to develop in a clockwise direction in the Northern Hemisphere and a counterclockwise direction in the Southern Hemisphere can be traced to the earth's rotation. Imagine a cannon fired southward from any latitude above the equator. Its initial eastward motion is the same as that at a point on the spinning earth. This initial eastward velocity is less than that at a point later in its trajectory, because points closer to the equator travel in a bigger circle as the earth rotates. Therefore, the cannon shell is deflected westward (to the right), from the perspective of a person standing on the earth. A gunner firing a cannon northward would find that the shell is also deflected toward the right. These sideways deflections are attributed to the Coriolis force, although there really is no force involved--it is just an effect of being in a rotating reference frame.
Thanks for that Vico - so what happens if you're living on the equator - does the water just pour straight down the plug hole without any circular motion ?
__________________
Everything is self-evident.
Reply With Quote Share with Facebook
  #96  
Old 19-11-2017, 01:28 AM
DAMNTHEWEATHER's Avatar
DAMNTHEWEATHER DAMNTHEWEATHER is offline
Silent Poster
 
Join Date: Oct 2009
Location: UK on the coast
Posts: 25,882
Default

Quote:
Originally Posted by cogito View Post
Thanks for that Vico - so what happens if you're living on the equator - does the water just pour straight down the plug hole without any circular motion ?
depends on what side a the line yer on ....one inch across
__________________
WELL SHIVER ME TIMBERS
pieces of eight pieces of eight
Reply With Quote Share with Facebook
  #97  
Old 19-11-2017, 01:54 AM
DAMNTHEWEATHER's Avatar
DAMNTHEWEATHER DAMNTHEWEATHER is offline
Silent Poster
 
Join Date: Oct 2009
Location: UK on the coast
Posts: 25,882
Default

Quote:
Originally Posted by DAMNTHEWEATHER View Post
depends on what side a the line yer on ....one inch across
Ceremonies aboard ships to mark a sailor's or passenger's first crossing of the Equator, as well as crossing the International Date Line, have been long-held traditions in navies and in other maritime services around the world.
Attached Images
File Type: jpg EAGLE Cross The Line copy.jpg (93.4 KB, 0 views)
__________________
WELL SHIVER ME TIMBERS
pieces of eight pieces of eight
Reply With Quote Share with Facebook
  #98  
Old 19-11-2017, 11:42 PM
Vico2 Vico2 is offline
Senior Member
 
Join Date: Dec 2015
Posts: 4,024
Default

Quote:
Originally Posted by cogito View Post
Thanks for that Vico - so what happens if you're living on the equator - does the water just pour straight down the plug hole without any circular motion ?
I never lived on the equator, so don't know - sorry
Reply With Quote Share with Facebook
  #99  
Old Yesterday, 02:13 AM
DAMNTHEWEATHER's Avatar
DAMNTHEWEATHER DAMNTHEWEATHER is offline
Silent Poster
 
Join Date: Oct 2009
Location: UK on the coast
Posts: 25,882
Default

Quote:
Originally Posted by Vico2 View Post
I never lived on the equator, so don't know - sorry
I had an all night beach barbie hooley right on the International Dateline.... Nuku'alofa, Tonga...one time o'clock here and step over..... another time there....great craic.

Quote:
Tanoa International Dateline Hotel offers accommodation in Nuku‘alofa. Located on the waterfront, guests can enjoy the on-site bar.
https://www.booking.com/hotel/to/tan...s=1&#hotelTmpl
__________________
WELL SHIVER ME TIMBERS
pieces of eight pieces of eight
Reply With Quote Share with Facebook
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT +1. The time now is 07:29 AM.


Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Copyright dublinforum.net 2009 - all rights reserved