Difference between revisions of "User:Tom Bishop"
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* [[Evidence for Universal Acceleration]] | * [[Evidence for Universal Acceleration]] | ||
* [[Variations of Gravity]] | * [[Variations of Gravity]] | ||
| + | * [[Gravimetry]] | ||
===Astronomical Nutation=== | ===Astronomical Nutation=== | ||
Revision as of 00:53, 4 December 2018
Works in Progress
Below are works in progress. The content may change significantly or be rearranged.
Sinking Ship Effect
Bi-Polar Model
Mainstream Astronomy
The Sun
Topics Related to Relativity
- Michelson-Morley Experiment
- Fizeau Experiment
- Precession of Mercury's Orbit
- Deflection of Light by the Sun
Other
- The Coriolis Effect
- Coriolis Effect (Weather)
- Cavendish Experiment
- Evidence for Universal Acceleration
- Variations of Gravity
- Gravimetry
Astronomical Nutation
Project Longstop - Consider deciphering meaning with references
Notes
Ballistic Missiles
Papers showing that missiles were designed to assume a Flat Earth:
Internal Guidance of Ballistic Missiles (1971)
http://www.dtic.mil/dtic/tr/fulltext/u2/722291.pdf
Videos:
NAVY Missile Instructor says that no earth curvature or rotation is assumed
Sagnac Experiment
https://cds.cern.ch/record/492804/files/0103091.pdf
“ Since its discovery at the beginning of the XX century the Sagnac effect [1] has play an important role in the understanding and development of fundamental physics (for a review see [2]). The Sagnac effect is the dependence of the interference pattern of the rotating interferometer on the direction and speed of rotation. This phenomenon is universal and manifested for any kind of waves, including the matter waves and has found a variety of applications for the practical purposes and in the fundamental physics [2].
...In the context of the Sagnac effects the null result of the Michelson-Morley experiment is also not clear. Applying the same logic to Sun centered rotating frame in which Earth is fixed, one would expect different light speeds as seen from Earth. ”
Epicycles
History
Gravitational Redshift
https://arxiv.org/pdf/1512.09253.pdf
“ The second possible misconception relates to the notion that gravitational redshift experiments provide evidence for spacetime curvature. They do, but contrary to what is claimed in a couple of important modern textbooks on GR, a single gravitational redshift experiment does not require an explanation in terms of curvature. Rather, it is only multiple such experiments, performed at appropriately different locations in spacetime, that suggest curvature, via the notion that inertial frames are only defined locally. In the process of elaborating on this in section (3), we also take a swipe at the nomenclature associated with the “clock hypothesis”. ”
Sleddog Speeds
txt: http://publications.americanalpineclub.org/articles/12198311400/print
Latitude Origin
https://i.imgur.com/WOAF25a.png
Nullschool Map
Jet Streams
“ Jet streams are ever-present, relatively narrow, streams of high-speed winds undulating around the Northern and Southern Hemispheres ”
“ Within these streams, winds travel at different rates of speed, from some 50 miles per hour at the outer edges of the stream, to some 250 miles per hour at the center. Speeds as high as 300 miles an hour have been reported. ”
https://i.imgur.com/d0NUCyD.png
Jet Streams Enable Faster Than Sound Flight
https://www.wired.com/story/norwegian-air-transatlantic-speed-record/
“ OK, about that "subsonic" bit. You might know that the speed of sound at an altitude of 30,000 to 40,000 feet is roughly 670 mph. But Norwegian’s planes didn't break the sound barrier. Those near-800-mph figures represent ground speed—how fast the aircraft is moving over land. Their air speed, which factors out the 200-mph wind boost, was closer to the 787's standard Mach 0.85. (The older Boeing 747 can cruise at Mach 0.86, but is less efficient than its younger stablemate.) When talking supersonic, and breaking sound barriers, it's all about the speed of the air passing over the wings, which in this case was more like 570 mph. ”
Jeran Video - Jet Streams SH
https://www.youtube.com/watch?v=CaDw-6sslrc
Trade Winds and South Pacific Gyre
https://en.wikipedia.org/wiki/Trade_winds
https://en.wikipedia.org/wiki/Trade_winds#/media/File:Map_prevailing_winds_on_earth.png
South Pacific Gyre
http://thejunkwave.com/what-is-a-gyre/
https://upload.wikimedia.org/wikipedia/commons/e/e4/South_Pacific_Gyre.png
Another illustration: https://books.google.com/books?id=bOg0EqqrDRgC&lpg=PA133&dq=%22jet%20streams%22%20%22southern%20hemisphere%22&pg=PA153#v=onepage&q=%22jet%20streams%22%20%22southern%20hemisphere%22&f=false
http://www.bbc.com/earth/story/20151009-where-is-the-windiest-place-on-earth
Flights over the Southern Oceans
“ The Southern Ocean is notorious for having some of the strongest winds and largest waves on the planet. ”
http://www.bbc.com/earth/story/20151009-where-is-the-windiest-place-on-earth
“ There are huge belts of wind caused by the uneven way the Sun heats the Earth's surface. 30° north and south of the equator, the trade winds blow steadily. At 40° lie the prevailing westerlies, and the polar easterlies begin at around 60°.
Ask any round-the-world sailor and they will quickly tell you the stormiest seas, stirred by the strongest winds, are found in the Southern Ocean. These infamously rough latitudes are labelled the "roaring 40s", "furious 50s" and "screaming 60s". ”
https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2003JD004179
“ The Southern Ocean is a vital element in the global climate. Its circumpolar current plays a crucial role in the global transport of mass, heat, momentum, and climate signals from one ocean basin to another. Moreover, the Southern Ocean hosts the strongest surface winds of any open ocean area, fostering strong heat, moisture, and momentum exchanges between the ocean and atmosphere. However, the Southern Ocean is tremendously undersurveyed by traditional observation methods because of the remoteness of the area and rough environment, causing the largest data gap of global oceans. ”
Listed Flight Times Skewed
http://www.travelandleisure.com/travel-tips/airlines-airports/why-flights-take-longer
“ Surprisingly, flight time is calculated from when the aircraft releases the parking brake (on push back) to when it sets the brake on arrival to the gate,” commercial pilot Chris Cooke told Travel + Leisure. “All that waiting in line during taxi and takeoff counts toward flight time.
Not surprisingly, saving money is another reason flights take longer today. “Airlines are able to save millions per year by flying slower," reveals a video from Business Insider. ”
A study which says they are skewing flight times:
“ Are you being told the truth about flight times?
Passenger jets have never been more advanced. With Boeing’s 787 Dreamliner, introduced in 2011, leading the charge, and new models like the 737 MAX and the Airbus A320neo following in its wake, the aircraft on which we travel are safer, smoother, quieter and more fuel efficient than ever.
They also appear perfectly capable of flying faster than their predecessors. Just last month the low-cost carrier Norwegian issued a celebratory press release after one of its 787 Dreamliners whizzed from John F. Kennedy International Airport in New York to London Gatwick in five hours and 13 minutes, setting a new transatlantic record for a subsonic plane. That’s three minutes quicker than the previous best time set by British Airways in January 2015.
So why, record-breaking feats notwithstanding, are airlines claiming it takes longer and longer to fly from A to B?
That’s according to research by OAG, the aviation analyst, carried out for Telegraph Travel. It found that over the last couple of decades, despite new technology, scheduled flight times - ie. how long an airline estimates it will take to complete a journey - have actually increased by as much as 50 per cent.
Looking at Europe’s busiest international route, for example - Heathrow to Dublin - it found that in 1996 the vast majority of airlines published a scheduled flight time of between 60 and 74 minutes. Fast forward 22 years and almost all claim the journey takes between 75 and 89 minutes, while a handful bank on 90 minutes or more. ”
WGS 1984
https://www.gpsworld.com/data-collection-of-wgs-84-information-or-is-it/
“ It is from this framework that the State Plane Coordinate (SPC) systems were developed for localized use. Transformation parameters were created to allow smaller coordinate values for easier use in all types for mapping and data collection. This is also where most surveyors were introduced to a simplified form of geodesy, but without the complicated formulas generally associated with its use.
Hardware and software enhancements have made the implementation of SPC systems much easier than past computations. The continued refinement of the NAD83 system through significant adjustments and equipment upgrades has given the surveyor a lot of confidence in this system, but I still caution our profession to promote QA/QC programs to verify the information being collected. GPS data acquisition techniques are not infallible and appropriate caution during use is still required. ”
https://en.wikipedia.org/wiki/State_Plane_Coordinate_System
The Earth is Not Round! Utah, NAD83 and WebMercator Projections
Background to NAS83
https://gisgeography.com/geodetic-datums-nad27-nad83-wgs84/
Datum definition:
https://www.nceas.ucsb.edu/~frazier/RSpatialGuides/OverviewCoordinateReferenceSystems.pdf
https://www.e-education.psu.edu/geog862/book/export/html/1669
"Originally, the difference between WGS84 as originally rolled out in 1987 and NAD83 as first introduced in 1986 coordinates was so small that transformation was unnecessary. That is no longer the case when it comes to NAD83 (2011) and WGS84 (G1674) the difference can be up to 1 or 2 meters."
Truth Tokens -Universal Transverse Mercator (UTM) conformal projection
https://web.archive.org/web/20181115035011/http://truthtokens.com/map/?upm_export=print
https://forums.autodesk.com/t5/civil-3d-forum/coordinates-system/td-p/3179510
Hi All,
I think my question is for people who are living in WA, or someone know much about US coordinate systems:
What is World Geodetic System of 1984 and how's difference between it and NAD83 Washtington state planes?
Thank you,
Re: Coordinates System WGS-84 is a coordinate system designed for world-wide navigation. It takes into account the spherical nature of the planet. The coordinates are given in deg-min-sec format, common with polar coordinates, for latitude and longitude.
The Washington state plane system is a square coordinate system specific for the state of Washington. It supposes a flat plane across the face of the state. Northing and Easting are given in feet, based on straight line-of-sight distance.
Transformations Between NAD83 and WGS84
https://www.ngs.noaa.gov/CORS/Articles/WGS84NAD83.pdf
https://www.e-education.psu.edu/geog862/book/export/html/1644
"Welcome to Lesson Six of this GPS course. And this time, we'll be talking about two coordinate systems. And I have a little bit of discussion concerning heights. We've touched on that a little bit. Now these coordinate systems that we're going to discuss are plane coordinate systems based upon the fiction that the earth is flat, which, of course, immediately introduces distortion. However, much of GIS work—and GPS work as well—is done based upon this presumption."
https://www.pobonline.com/articles/86585-geodetic-surveying-made-plain
A decade or two ago, I was the instructor for some introductory surveying courses at a community college. In the first class we would define “plane surveying” as surveying that did not take into consideration the curvature of earth, and “geodetic surveying” as that which did. That was about the only time the two categories received anywhere near equal attention. Oh, we would point out (still in that first lecture) some of the real-world evidence of a non-flat earth, such as the fact that the length of an 11.5-mile arc on the earth's surface is only five hundredths of a foot longer than its subtended chord, or that the sum of the angles in a spherical triangle on the earth’s surface having an area of 75 square miles is only one second greater than the angle sum of the same size plane triangle. (Even today I get a kick out of those dramatic tidbits. I’m sure a real geodesist would roll his or her eyes at such trivia!) But those examples were used as reasons for not focusing—no, for not mentioning—geodetic concepts for the rest of the semester. We would end the ten-minute token nod to geodetic surveying with the tongue-in-cheek remark, “Therefore, for this class, we will respect the time-honored principle handed down through the ages—that the earth is flat.” And, truth be known, that’s probably not a bad narrowing of a dauntingly broad subject.
But more than narrowing, it was simply that few rank-and-file surveyors in private practice ever had occasion to use geodetic concepts in their daily work. Even when we dutifully enrolled in the occasional State Plane Coordinate seminar, the principles quickly faded from memory from lack of use. If a surveyor from the general population had ever even heard of the geoid and its relationship to the ellipsoid, and where mean sea level fit into the picture, hearing about it was as far it went.