NTNUJAVA Virtual Physics Laboratory
Enjoy the fun of physics with simulations!
Backup site http://enjoy.phy.ntnu.edu.tw/ntnujava/
April 20, 2021, 04:24:45 am *
Welcome, Guest. Please login or register.
Did you miss your activation email?

Login with username, password and session length
   Home   Help Search Login Register  
Like what you dislike of those things are imortant. ...Wisdom
Google Bookmarks Yahoo My Web MSN Live Netscape Del.icio.us FURL Stumble Upon Delirious Ask FaceBook

Pages: [1]   Go Down
Author Topic: Internal Doppler or One laser can I measure velocity like this  (Read 12633 times)
0 Members and 1 Guest are viewing this topic. Click to toggle author information(expand message area).
Jr. Member
Offline Offline

Posts: 56

Embed this message
on: January 07, 2013, 05:14:48 pm »


Many authors repeat  below words as a famous problem  ( I copy below words)

"  Imagine an observer traveling inside a windowless spaceship moving away from the sun at constant velocity. Galileo asserted that there are no mechanical experiments that can be made inside the rocket that will tell the occupants that the rocket is moving . The question ``are we moving'' has no meaning unless we specify a reference frame (are we moving with respect to that star'' is meaningful). This fact, formulated in the 1600's remains very true today and is one of the cornerstones of Einstein's theories of relativity. "
"Einstein’s theory was based on two key principles:

1 The principle of relativity: The laws of physics don’t change, even for objects moving in inertial (constant speed) frames of reference.

2 The principle of the speed of light: The speed of light is the same for all observers, regardless of their motion relative to the light source. (Physicists write this speed using the symbol c.) "

More detail about doppler


 points 1-4  and drawing = main  idea without calculator :

1. Distace laser/sensors = 300 000 km light need 1s to touch sensor
2. Laser turn on/off  time  t=0,1 s  (work time)
3. What will register  sensor  - time between (0,1 - 1) s  and after ?
4. ENERGY : What if rocket's V is  too fast for sensor long ?
 to confirm -measure Energy that laser  took  and sensor register

More detail about laser


I'm engineer / invetor I looking for job / target >>> http://tesla4.blogspot.com/

Offline Offline

Posts: 6

Embed this message
Reply #1 on: December 20, 2013, 03:44:06 pm »

Thank you for this great idea! I solved my homework.
Pages: [1]   Go Up
Like what you dislike of those things are imortant. ...Wisdom
Jump to:  

Related Topics
Subject Started by Replies Views Last post
Ray tracing for laser light
Fu-Kwun Hwang 20 24462 Last post April 01, 2010, 06:05:15 am
by Fu-Kwun Hwang
Laser pumping (3 level)
Modern Physics
Fu-Kwun Hwang 3 29524 Last post February 03, 2020, 05:18:09 pm
by moshaver
Laser pumping (3 level)
modern physics
ahmedelshfie 0 5997 Last post March 17, 2011, 01:28:48 am
by ahmedelshfie
11 h ago Discovery - Internal Doppler Efect ....
Question related to Physics or physics related simulation
tesla2 3 3998 Last post August 06, 2019, 12:41:27 am
by victoriajames00002
Internal doppler - New Model of the Univers
Request for physics Simulations
tesla2 0 3713 Last post January 07, 2013, 05:24:03 pm
by tesla2
Powered by MySQL Powered by PHP Powered by SMF 1.1.13 | SMF © 2006-2011, Simple Machines LLC Valid XHTML 1.0! Valid CSS!
Page created in 0.053 seconds with 23 queries.since 2011/06/15