![]() |
Science Fiction
Dictionary Latest By
"I took the Minnesota multiphasic profile test once, and I tested out as paranoid, cyclothymic, neurotic, and schizophrenic. But I also tested out as an incorrigible liar!"
|
![]() |
![]() Early navigation relied on several natural phenomena; the fixed pole star (or stars, when the pyramids were built) and the north magnetic pole. What can you do if a planet has no stable magnetic field, or if the planet's surface is prone to storms that disrupt the field?
People have made practical use of the Earth's magnetic field since ancient times, but it wasn't until 1600 that William Gilberte, personal physician to Queen Elizabeth, published his astounding De Magnete. In it, he revealed his studies with a "terrella" (a magnetized sphere); he hypothesized that the Earth was itself an immense magnet.
If you're into magnetic fields (and, in fact, we all are - just use a compass!), take a look at the very cool Earth's Magnetic Field Images, an interactive page that allows you to see field strengths at different years in the 20th century. (Courtesy of our friends at NOAA - the National Oceanic and Atmospheric Administration.) (Special thanks to a reader who pointed me to a new URL for the old one!) Comment/Join this discussion ( 0 ) | RSS/XML | Blog This | Additional
resources:
Want to Contribute an
Item?
It's easy:
|
![]() |
Science Fiction
Timeline
3D-Printed Exoskeleton Learns From Your Hand
'...small electric motors at the principal joints worked the prosthetic framework by means of steel cables...'
Smartwatch Powered By Slime Mold
'Living protoplasm incorporated into the Ampek F-a2 recording system...'
Carpentopod Walking Table
'Twoflower's Luggage, which was currently ambling along on its little legs...'
SpaceX Rocket Shuttle Point-To-Point On Earth
'He came to as the ship went into free flight, arching in a high parabola over the plains...'
Quaise Uses Beams Of Energy To Dig Geothermal Wells
'The peculiar quality of this light, which gave it its great preeminence over all other penetrating rays...'
Robots Repair And Modify Themselves
'The overworked leg motor would have to cool down before he could work on it...'
Waymo And Tesla 'Autonomous Cabs' Are Piloted By Remote Drivers
‘Where to, sport?’ the starter at cab relay asked.
|
![]() |
![]() |
Home | Glossary
| Science Fiction Timeline | Category | New | Contact
Us | FAQ | Advertise | ![]() Technovelgy.com - where science meets fiction™ Copyright© Technovelgy LLC; all rights reserved. |
![]() |