Q: watch clock earth displays sun rising over southern latitude and progressing to Northern latitude each day. The sun should remain ... watch clock earth displays sun rising over southern latitude and progressing to Northern latitude each day. The sun should remain perpindicular to the same latitude througout any single day. more
-
All replies
-
Helpful answers
-
Jun 14, 2015 1:00 PM in response to roco13by KiltedTim,★HelpfulUm... no. The Earth is tilted on its axis. That is why we experience 'seasons'. Perhaps you need to re-take 3rd grade science class.
-
Jun 15, 2015 6:41 AM in response to KiltedTimby roco13,Have you ever awakened in winter and progressed to summer by evening?
-
Jun 15, 2015 6:47 AM in response to roco13by KiltedTim,roco13 wrote:
Have you ever awakened in winter and progressed to summer by evening?
I live in Cleveland... so... yes, actually... :-P
-
Jun 15, 2015 6:49 AM in response to roco13by roco13,it takes six months for that tilt to change from winter to summer, not one day!
-
Jun 15, 2015 7:03 AM in response to KiltedTimby roco13,daily weather changes are not due to axis tilt, even in Cleveland.
-
Jun 15, 2015 7:10 AM in response to roco13by KiltedTim,The tilt on that watch face does not change over the course of a day. Not when I look at it.
Because of the tilt of the Earth, the path of the Sun does NOT remain over the "same latitude" over the course of a day.
Please go ask a 3rd grade teacher how it works.
-
Jun 15, 2015 7:19 AM in response to KiltedTimby roco13,get a flashlight, shine it on a globe and spin the globe. Dont tell your 3rd grade teacher. She might lower your grade.
-
Jun 15, 2015 7:41 AM in response to roco13by Lawrence Finch,A globe does not have a tilted axis with respect to the Sun. The Earth does.
-
Jun 15, 2015 7:43 AM in response to Lawrence Finchby KiltedTim,And I thought the public education system in the U.S. was bad...
-
Jun 15, 2015 7:43 AM in response to roco13by Csound1,roco13 wrote:
get a flashlight, shine it on a globe and spin the globe. Dont tell your 3rd grade teacher. She might lower your grade.
Time to tell Apple that they got it all wrong, maybe they will believe you.
-
Jun 15, 2015 8:09 AM in response to Lawrence Finchby roco13,Tilt it with respect to the flashlight.
-
-
Jun 20, 2015 9:21 AM in response to roco13by Tim Campbell1,Astronomy watch face:
Assuming the original poster is referring to the view of Earth when using the "Astronomy" watch face, they are correct. The watch does not show the correct terminator for the day vs. night side of the Earth. I'll explain...
As I write this, it's Saturday, June 20. Tomorrow is the Summer Solstice. On that day, the Earth's northern axis point toward the Sun. Our planet has a 23.5º tilt (not exactly, but close enough). The tropic of Cancer is 23.5º north of the Equator and the Sun will appear to be "directly above" that line tomorrow.
But here's the real giveaway that the shading of the Earth is wrong...
The arctic circle is 66.5º north latitude... which also happens to be 23.5º away from the North Pole. The sun does not set for an observer standing at any location within the Arctic Circle on the day of the Summer Solstice. If you look at your watch face, that northern part of the Earth should always be illuminated.
Roll the crown of your watch (with the Earth view) forward and backward by a day and you'll notice that the the North Pole is indeed dark for at least part of the day. As I look at my watch face right now, I see that only the southern half of Greenland has sun on it. This is an incorrect rendering. At mid-day for an observer in Greenland, all of Greenland should have sunlight -- the rendering on the watch is wrong.
Solar watch face:
There is also a "Solar" watch face. This does not show latitude... it shows the Sun's "altitude" above (or below) the "horizon line". In other words it's the relative view you would see standing in one place on the Earth and looking south (for Northern hemisphere observers). It is not a view hovering in space looking back at Earth.
If you roll the crown forward or backward, the sun will move along the line to indicate a position of the sun and you'll see some dots appear along the curve. The left-most (and first) dot indicates the time of "nautical" dawn (there are three definitions for "dawn"... "astronomical", "nautical", and "civil" which correspond to the sun being 18º, 12º, and 6º below the horizon (respectively). There is also a dot for sunrise. Another dot for astronomical noon (the time at which the sun truly crosses the meridian regardless of your timezone, daylight savings time, etc. (in other words this time will generally NOT occur at the time when your clock says "12:00pm". For me, it's closer to 1:30pm (and that is accurate -- it is not incorrect.) The two dots to the right indicate "sunset" and the end of "nautical" dusk (night) when the sun is 12º below the horizon again.
The "Solar" watch face appears to work correctly. the "Earth" view within the "Astronomy" watch face is incorrect.
-
Aug 15, 2015 8:35 AM in response to Tim Campbell1by Jizkid,So Tim,
This means that Roco13 is right all the time, isn't it?
I think all his commenters should go back to school and do some geography and math again.
The Astronomical clock face is wrong as it shows that currently (15th august) the south pole is in the sun for the whole of the day. This is impossible. It is winter on that side of the earth so the south pole should be dark for all the time.
Instead of that now the north pole is shown as being in the shade for the whole day, while it is summer over here and it should be in the sun for the whole day.
I have seen this error quite early when I put the watch on the astronomical clock face. But I could nowhere find that others had also seen is, which I guess is weird, so I was thinking and thinking, but am glad to have read your explanation as this fits with my view.
I wonder when Apple is going to repair this error.
Cheers and my admiration goes to Roco13, with his continuous trying to explain what was wrong, while others were pointing him to school, while they should be in the school themselves. Guys, don't want to offend you, but really the shade should today be on the bottom of the earth.
Cheers,
Jim