Wobbly Earth - Sixty Symbols

Axial precession is the reason the Earth's axis has a long-term but quite dramatic "wobble", as explained here by Roger Bowley and Mike Merrifield.

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Category:

Science & Technology

Tags:

• earth
• axis
• precession
• wobble
• planet

[whatsarobut]

I sincerely wish more educational shows were like this. They always seem to stifle the actual science content in favor of being "entertaining"- not realizing talented people can make science entertaining without compromising content. :) Thanks so much for all the videos!

[sixtysymbols]

@whatsarobut you're welcome... thanks for the nice comment!

[wvb93]

hey brady, do you ask some of those questions for the sake of your audience or do you just get into it so much that you end up asking for your own curiosity?

[sixtysymbols]

@wvb93 a bit of both I think...

[mrh3h]

Please make more videos. They are short and a little bit nerdy (it's physics after all), but contain so much useful information about the world. Thank you for your effort!

[sixtysymbols]

@mrh3h we've got more coming

[sixtysymbols]

@davedupplaw it's never too late!

[Juxtaroberto]

OMG! I want that floating Earth!

[voiceofreason2008]

Does this mean that the 'greenhouse effect' is complete junk and it is in fact a result of a perfectly natural event in the earths rotational axis

If so then i'm no longer gonna feel guilty when i have a cigarette or run my car needlesly

[NWEGary001]

so does that mean that the seasons gonna change, so that winter is in june?

[weurRTG]

6:29 A physicist using the phrase "centrifugal forces"?

[whoistavo]

Great Video. Where could I buy a rotating/ hovering globe like the one in this video?

[nedladdy]

Clever dicks those greeks

cheers

[pseudorandomly]

@pseudorandomly

(cont) ... that situation will reverse. Since the Earth moves more quickly in its orbit when it is close, the southern hemisphere will wind up with less summertime heating while the northern hemisphere gets more. But since the northern hemisphere has most of the land, that change of heat balance will have some effect on climate.

[pseudorandomly]

@jerryoven

Realize that the *tilt* of the Earth with respect to the Sun (23-1/2 degrees) isn't changing; only the *direction* the Earth's axis points toward changes. So precession doesn't really change the climate by itself. What *does* happen, though, is that the seasons change position in the Earth's orbit.

Right now, the northern hemisphere has winter when the Earth is closest to the Sun (and the southern hemisphere has summer). In 13,000 years (half of the precession period) ... (cont)

[jacobpaprotskiy]

i laugh every time i watch one of your videos because of the atlas of creation...