atomic travel clocks String theory. Is it a valid theory or just a bunch of made up jibberish to satisfy the curiosity of mad?
physicists seeking the universal answer to what Einstein sought out his entire life.
Of course, it gets so complicated sometimes that there are probably only a couple hundred guys who can actually understand it good enough to even come close to knowing if its realistic or not.
I've read a lot about it, and it makes sense sometimes, but it seems like it might just be a bunch of theoretical hocus pocus to complicated to prove or debunk.
I think that the real answer to this question will be a lot simpler and mind blowing as Einstein's concepts were when they first came out. Simple and eventually proven. Not completely proven, but two atomic clocks, one still and the other in a jet traveling around the world sounds like good enough proof for me.
Does anyone know of any good references on this subject besides Brian Greene's books?
Being untestable and, therefore, unfalsifiable, string/M theory is not a theory by definition. At best, it is a philosophy or, as I like to put it, a set of equations looking for some physics to support it. (NB: I will continue to call it "theory" even though it isn't simply because that's what everyone else calls is)
One major issue with string/M theory is that it is based on something called "perturbation." Simply stated, this means that the defining equations are chopped off...some of the higher order terms are missing, because that's they only way they can be solved given current mathematics capability. Thus, in a very real sense, the current solutions are only approximations to what the real solutions might be. [See source.]
Yet another issue is using higher dimensions to get gravity to show up in the solutions. One of the driving forces behind string/M theory is to get gravity defined like the other three fundamental forces (EM, and strong and weak atomic) have been defined mathematically. This is, of course, an assumption that cannot be tested within our myopic four dimensional world; this is one of the prime reasons string/M theory really isn't a theory.
Still another issue is the fundamental assumption of duality. This is a bit hard to explain without writing a textbook, but string/M theory uses the assumption that physics phenomena will remain the same regardless of the framework or perspective used to examine them. This results in solving equations in one coordinate system because they are easier to solve than if they were solved in the otherwise most logical coordinate system. Doing linear programming duals is one example if you have the math background. [See source.]
I've been looking at string/M theory for two years now. The more I examine it, the more I tend to agree...it is hocus pocus. I believe Occam's Razor...given all things equal, the true solution tends to be the simplist...string/M theory is not the true solution.
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The new Casio Atomic Baby-G brings atomic timekeeping to the durability and fashion of the Baby-G. Atomic Timekeeping Shock Resistant 100M Water Resistant (330ft) Electro-Luminescent Backlight Light with Afterglow World Time (48 cities) 1/100 Second Stopwatch Hourly Time Signal Auto Calendar 12/24 Hour Formats Battery CR1220 Module 3772
This new Promaster Atomic combines the best features of the Skyhawk AT and the Promaster Carbon series to create a flight chronograph with a rugged carbon fiber bezel, atomic accuracy and world time in 43 cities Stainless Steel Case and Bracelet Atomic Timekeeping with Radio Controlled Accuracy Citizen Eco-Drive Solar Power Technology never needs a battery 180 Day Power Reserve; 2.5 Year Power Reserve with Power-Save Function World Time in 43 Cities 2 Alarms 1/100 Second Chronograph Measures up to 24 Horus 99 Minute Countdown Timer Perpetual Calendar Digital Display Light Greenwich Mean Time Display One-Way Rotating Elapsed Time Carbon Fiber Bezel Non-Reflective Mineral Glass Crystal Power Reserve Indicator Water Resistant to 200 Meters (660 Feet) Bracelet features a Fold-Over Safety Clasp with Push-Button Release 44mm Case Width (Approximately 1 3/4") 15mm Case Thickness (Approximately 5/8")
This watch combines the toughness of G-Shock with the convenience of a light powered watch. And the Casio Wave Ceptor Atomic watches receive radio signals from the most accurate clock in the world - the cesium atomic clock at the National Bureau of Standards Light Powered - No batteries to change, ever! Shock Resistant 200 meter water resistant World time in 26 time zones, 30 cities Time recorder function - 30 records Daylight savings time on/off Auto Electro-luminscent backlight with afterglow 1/100 second stopwatch with measuring capacity up to : 23:59'59.99" Stopwatch measuring modes: elapsed time, split time, 1st-2nd place times 4 alarms with snooze Hourly time signal Auto-calendar ( pre-programmed until the year 2039) 12/24- hour formats Accuracy: +/- 15 seconds per month
This watch combines the toughness of G-Shock with the convenience of a light powered watch. And the Casio Wave Ceptor Atomic watches receive radio signals from the most accurate clock in the world - the cesium atomic clock at the National Bureau of Standards Light Powered - No batteries to change, ever! Shock Resistant 200 meter water resistant World time in 26 time zones, 30 cities Daylight savings time on/off Auto Electro-luminscent backlight with afterglow 1/100 second stopwatch with measuring capacity up to : 23:59'59.99" Stopwatch measuring modes: elapsed time, split time, 1st-2nd place times 4 alarms with snooze Hourly time signal Auto-calendar ( pre-programmed until the year 2039) 12/24- hour formats Accuracy: +/- 15 seconds per month
This watch combines the toughness of G-Shock with the convenience of a light powered watch. And the Casio Wave Ceptor Atomic watches receive radio signals from the most accurate clock in the world - the cesium atomic clock at the National Bureau of Standards Light Powered - No batteries to change, ever! Shock Resistant 200 meter water resistant World time in 26 time zones, 30 cities Daylight savings time on/off Auto Electro-luminscent backlight with afterglow 1/100 second stopwatch with measuring capacity up to : 23:59'59.99" Stopwatch measuring modes: elapsed time, split time, 1st-2nd place times 4 alarms with snooze Hourly time signal Auto-calendar ( pre-programmed until the year 2039) 12/24- hour formats Accuracy: +/- 15 seconds per month
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MORE FEATURES THAN EVER. NEW CITIZEN ECO-DRIVE SKYHAWK AT The new, fully loaded 3rd generation Skyhawk redefines atomic timekeeping with radio controlled accuracy and Eco-Drive technology. Radio signals are received both automatically and on-demand by the fully loaded Skyhawk A-T. Atomic Timekeeping with Radio Accuracy Eco-Drive Technology (Solar Powered so you never have to change a battery) World Time for 43 Cities 2 Alarms 24 Hour 1/100 Second Chronograph Perpetual Calendar to the year 2100 Analog/Digital Displays 99 Minute Countdown Timer with Alarm Water Resistant to 200 Meters (660 Feet) 3-Day Low Charge Warning (Will notify you 3 Days before the watch completely stops) Power Reserve Indicator Maximum Power Reserve at Full Charge is 180 Days Stainless Steel Case Fold-Over Clasp with Double Hidden Push Button Release 45mm Case Width without Crown
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Multi-Band Atomic Timekeeping (US, UK, Germany, Japan) Tough Solar Power Digital Compass Altimeter w/Alarm & Memory Altitude Barometer Thermometer 100M Water Resistant Full Auto EL Backlight with Afterglow World Time 5 Daily Alarms Countdown Timer 1/100 Second Stopwatch Hourly Time Signal Auto Calendar (pre-programmed until the year 2099) 12/24 Hour Formats Button Operation Tone On/Off Accuracy: ±20 seconds per month (with no signal calibration) Battery Power Indicator Power Saving Function
Titanium Case and Bracelet Multi-Band Atomic Timekeeping (US, UK, Germany, Japan) Tough Solar Power Digital Compass Altimeter w/Alarm & Memory Altitude Barometer Thermometer 100M Water Resistant Full Auto EL Backlight with Afterglow World Time 5 Daily Alarms Countdown Timer 1/100 Second Stopwatch Hourly Time Signal Auto Calendar (pre-programmed until the year 2099) 12/24 Hour Formats Button Operation Tone On/Off Accuracy: ±20 seconds per month (with no signal calibration) Battery Power Indicator Power Saving Function
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Atomic Timekeeping Receives time calibration radio signals which keep the displayed time accurate Auto receive function (4 times per day) Manual receive function Signal: WWVB, Frequency: 60kHz Tough Solar Power Shock Resistant 200M Water Resistant Auto EL Backlight with Afterglow World Time29 times zones (30 cities), city code display, daylight saving on/off 4 Daily Alarms & 1 Snooze Alarm Time Recorder; Memory capacity: 30 records (each record contains month, day, hour, minutes, seconds) 1/100 second stopwatch Measuring capacity: 23:59'59.99" Measuring modes: Elapsed time, split time, 1st-2nd place times Hourly Time Signal Auto Calendar (pre-programmed until the year 2039) 12/24 Hour Formats Accuracy: ±15 seconds per month (with no signal calibration) Storage Battery CTL1616 (Rechargeable Solar Battery Cell) Battery Power Indicator Power Saving Function Approx. battery life: 11 months on full charge (without further exposure to light) Module 2688 Case Width: 45mm (Approximately 1 3/4") Case Thickness: 15mm (Approximately 5/8")
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The all new Titanium Pathfinder; combining the best elements of Pathfinder & Sea Pathfinder, Casio introduces the best Pathfinder to date. The Multi-Band 5 Atomic Solar Pathfinder steps beyond its core competencies of Digital Compass, Altimeter, Barometer and Thermometer by adding Tide and Moon Graphs and Moon Age Data. And if that wasn’t enough, it's 200M Water Resistant! Multi-Band Atomic Timekeeping (US, UK, Germany, Japan)Receives time calibration radio signals which keep the displayed time accurate Auto receive function (up to 6 times per day) Manual receive function Signal: US WWVB, UK MSF, Germany DCF77, Japan JJY40/JJY60 Frequency: US 60kHz, UK 60kHz, Germany 77.5kHz, Japan 40/60kHz Tough Solar Power 200M Water Resistant Tide Graph (based on a combination of preset and user input data) Moon Data (moon age based on current date or user input data, moon phase graph) Digital Compass 16 points of measurement Measuring range: 0 to 359 degrees Measuring unit: 1 degree Bearing Memory Memory Capacity: 1 record (stored direction angle and indicator) Altimeter Measuring range: -700 to 10,000m (-2,300 to 32,800ft) Measuring unit: 5m (20ft) Auto memory measurements Altimeter Memory Memory capacity: 20 records Measurement data: altitude, month, date, time Max altitude memory Relative altitude display Altitude tendency graph Altitude differential graphic Barometer Display range: 260 to 1,100 hPa (7.65 to 32.45 inHg) Display unit: 1 hPa (0.05 inHg) Atmospheric pressure tendency graph Atmospheric pressure differential grapic Thermometer Display range: -10 to 60 C (14 to 140 F) Display unit: 0.1 C (0.2 F) Low Temperature Resistant (-10 C / 14 F) Full Auto EL Backlight with Afterglow World Time29 times zones (33 cities), city code display, daylight saving on/off 5 Daily Alarms Countdown (Yacht) Timer Measuring unit: 1 second Countdown range: 1 minute to 60 minutes Countdown Alarm, Progress Beeper 1/100 second stopwatch Measuring capacity: 23:59'59.99" Measuring modes: Elapsed time, split time, 1st-2nd place times Hourly Time Signal Auto Calendar (pre-programmed until the year 2099) 12/24 Hour Formats Button operation tone on/off Accuracy: +/-20 seconds per month (with no signal calibration) Storage Battery CTL1616 Battery Power Indicator Power Saving Function Approx. battery life: 5 months on full charge with Power Saving Function (without further exposure to light) Titanium Case and Bracelet Module 3134 Case Size: 56.2 X 50.6 X 13.9mm Weight: 113 grams
This watch combines the toughness of G-Shock with the convenience of a light powered watch. And the Casio Wave Ceptor Atomic watches receive radio signals from the most accurate clock in the world - the cesium atomic clock at the National Bureau of Standards Black Ion Plated Case and Bracelet with Blue Ion Plated Bezel Light Powered - No batteries to change, ever! Shock Resistant 200 meter water resistant World time in 26 time zones, 30 cities Time recorder function - 30 records Daylight savings time on/off Auto Electro-luminscent backlight with afterglow 1/100 second stopwatch with measuring capacity up to : 23:59'59.99" Stopwatch measuring modes: elapsed time, split time, 1st-2nd place times 4 alarms with snooze Hourly time signal Auto-calendar ( pre-programmed until the year 2039) 12/24- hour formats Accuracy: +/- 15 seconds per month
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Sheeplocks - Misty Blue (Prod. by Muhammad)
Another question about Einstein's theory of special relativity...?
I know that a consequence of relativity is time dilation. I can understand how this works with events and such, since most events relate to light or some process such as electricity. I've heard of experiments where planes have traveled really fast and recorded time dilations with atomic clocks. This makes sense. But I also read that it works with biological processes too. Can someone explain how this works. I don't understand how the biology of the human body is related to light, electromagnetism, gravity, or the physics of special relativity.
Relativistic length contraction makes the orbits of electrons elliptical and the electrons take longer to go around the nucleus. Therefore, chemical processes are slower, and biology is a matter of chemistry.
Hi, JT here. I recently received a Projection Alarm Clock as a gift and thought that it was just the coolest thing ever. I've started giving them to friends and thought I'd do a little research and put a site together about Projection Clocks and Atomic Clocks. I hope you enjoy!
Hi, JT here. I recently received a Projection Alarm Clock as a gift and thought that it was just the coolest thing ever. I've started giving them to friends and thought I'd do a little research and put a site together about Projection Clocks and Atomic Clocks. I hope you enjoy!