How to go faster than light/ barcamp chiangmai 6 @pruet

448 views
233 views

Published on

How to go faster than light? What can be done, what can't ? and how?

Published in: Technology
0 Comments
1 Like
Statistics
Notes
  • Be the first to comment

No Downloads
Views
Total views
448
On SlideShare
0
From Embeds
0
Number of Embeds
0
Actions
Shares
0
Downloads
3
Comments
0
Likes
1
Embeds 0
No embeds

No notes for slide

How to go faster than light/ barcamp chiangmai 6 @pruet

  1. 1. How to go faster than light. "Scotty, push it right to the edge!"
  2. 2. Speaker @pruet
  3. 3. How to go faster than light? ● Light speed is not fast enough. ○ Milkyway's diameter is about 10^5 light-year ○ Andromeda galaxy is about 2.5 megalight-year away ● Physical limitation ○ General relativity said that ... " no object can accelerate to the speed of light in the reference frame of any coincident observe". ● How to avoid physical limitation ○ Move to another space -> hyperspace jump -> "Jump" ○ Don't move yourself -> move the space -> "Push"
  4. 4. Jump to where? ● To higher space/dimension (i.e., hyperspace) ○ 4th dimension, 5th dimension, ... ○ How? ■ Blackhole/whitehole ■ Wormhole (Einstein-Rosen Bridge) ○ Theoretically impossible by now (update me please) ■ require exotic material with negative energy density. ○ Who uses this? ■ Star wars folk... . ╮(─▽─)╭
  5. 5. http://images3.wikia.nocookie. net/__cb20060328020141/hyperspace/images/8/80/Worm3.GIF
  6. 6. Push what? ● Basically your spaceship does nothing, but the space around you is pushed forward, then you follow the flow. ○ Think about surfing
  7. 7. How? ● By contracting and expanding the space, before and behind the spaceship. ○ "Warp bubble" ● Based on "Alcubierre drive" theory, formulated in 1994 (~ 30 years after the original Star Trek series) ● Alcubierre drive suggests that by using very high energy, we can collapse and expanding the space. ○ Problem: very large amount of energy required
  8. 8. How? ● OK, how much of that? ○ To move a small spaceship across Milkyway, you need 10^64 kg mass-energy equivalence (Einstein goes here) ○ How large is 10^64 kg? it's more that estimated mass of the universe itself. ● So, is it also theoretically impossible ? ○ First, we can use "negative mass" to generate that amount of energy. ■ Btw, negative mass is not "anti-matter", generally speaking, anti-matter has positive mass. ■ Negative mass is theoretically possible
  9. 9. In Startrek? ● matter/anti-matter annihilation ● Fictional "dilithium" crystals is used separate matter/anti-matter.
  10. 10. How soon? ● According to NASA, by carefully designing the drive engine, we requires very small amount of energy (energy-mass equal to the mass of Voyeger spacecraft) ○ 10 times faster than light ○ They are testing the idea now at Johnson Space Center now. ■ Using laser to expand/contract the space ■ More info, google "White–Juday warp-field interferometer" ● So how soon? ○ Maybe before we send that guy to Mars .

×