Search RFC: |                                  
Please support my efforts by ADVERTISING!
Serving a Pleasant Blend of Yesterday,
Today, and Tomorrow™

Vintage Magazines

Electronics World
Popular Electronics
Radio & TV News
QST | Pop Science
Popular Mechanics
Radio-Craft
Radio-Electronics
Short Wave Craft
Electronics | OFA
Saturday Eve Post

Formulas | Data

Electronics | RF
Mathematics
Mechanics
Physics


Calvin & Phineas

kmblatt83@aol.com

Archive | Sitemap

Resources

Articles | Radar
Cogitations
Magazines | AI
RF Museum
Software | Videos
Radio Service
Tech Notes

Entertainment

Crosswords
Humor | Podcasts
Quotes | Quizzes
Tech Comics

Parts | Services

1000s of Listings


About RF Cafe

Software: RF Cascade Workbook | RF Symbols for Office | RF Symbols & Stencils for Visio | Espresso Workbook
Please Support My Advertisers!
Aegis Power | Centric RF | RFCT
Empower RF | Reactel | SF Circuits

Alliance Test | Isotec
RF Cascade Workbook by RF Cafe

Innovative Power Products (IPP) RF Combiners / Dividers - RF Cafe

Espresso Engineering Workbook
Amplifier Solutions Corporation (ASC) - RF Cafe

RF Cascade Workbook by RF Cafe

Tennode RF Connectors and Cables - RF Cafe

Please Support RF Cafe by purchasing my ridiculously low-priced products, all of which I created.

RF Cascade Workbook for Excel

RF & Electronics Symbols for Visio

RF & Electronics Symbols for Office

RF & Electronics Stencils for Visio

RF Workbench

T-Shirts, Mugs, Cups, Ball Caps, Mouse Pads

These Are Available for Free

Espresso Engineering Workbook™

Smith Chart™ for Excel

Johanson Technology Prototyping Kit - RF Cafe

Falling Through the Earth
Kirt's Cogitations™ #8

minimum height spacer

RF Cafe University"Factoids," "Kirt's Cogitations," and "Tech Topics Smorgasbord" are all manifestations of my ranting on various subjects relevant (usually) to the overall RF Cafe theme. All may be accessed on these pages:

 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 37

< Previous                      Next >

 

Falling Through the Earth

So, what WOULD happen if you could drill a hole through the center of the earth and then jump into it? To make it easy, we must assume no air resistance, no bumping the sides on the way through, a perfectly homogeneous mass distribution for the earth, and a few other idealities. About 42 minutes after jumping in to the hole, you would emerge at the other side of the earth, 7,926 miles away, at the same height above the surface from which you jumped into the hole. Unless you grab onto something to keep you from falling back through to the other side again, you would oscillate back and forth forever in 84 minute round-trips.

Modular Components - RF Cafe