Legend has it that Saint Patrick gave a four-leaf clover to a group of his followers; the fourth leaf put there by God to bring…

Given recent news, we felt compelled to share a couple of tips with our readers. Consider them to be ocean pro-moves.

From the darkness emerges a boot. An old leather, steel-toed, work boot. It shouldn’t be there resting on the seafloor nearly two kilometers deep. I’m…

Earlier this year I warned that The Ocean Cleanup would catch and kill floating marine life. This week they announced they’re collecting plastic, and their picture…

The Deepwater Horizon disaster released approximately 4 million barrels of oil from the Macondo Wellhead over the course of 87 days in 2010.  Thus, becoming…

Connecting the oceans to land are numerous carbon highways.  These conduits bring food from land to the ocean, supporting an abundance of life.  Our group…

The deep sea, areas of the ocean below 200 meters, is the largest biome on Earth‐‐vast, remote, and inhospitable. These conditions create unique challenges for…

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Relativistic length contraction is theoretically predicted but not directly tested, which lead to incorrect interpretation of the theory illustrated by Bell’s spaceship paradox and Ehrenfest paradox. But these paradoxes can help us designing experiments to test length contraction. Ideal direct experimental proof should contain the following steps: 1. Measure the tested object’s length at rest,...

Astrophysical jets are flows of matter that moves at relativistic speed. They are opportunity to see length contraction in action. An astrophysical jet is analyzed to explain the length contraction effect. Astrophysical jets are ejected from compact objects such as black holes. https://en.wikipedia.org/wiki/Astrophysical_jet#/media/File:M87_jet.jpg is a photograph of the jet ejected by the supermassive black hole...

Length contraction is used to explain Michelson–Morley experiment. A Michelson interferometer is formed by 2 perpendicular arms. The journey of light along the vertical arm gives the time dilation law. The journey of light along the horizontal arm gives the length contraction law. The derivation scheme of the length contraction law is: 1. The time...

In Special Relativity relativity of simultaneity is the fact that 2 simultaneous events occurring in a stationary frame does not appear simultaneous in a moving frame. For example, in Einstein’s train thought experiment 2 simultaneous flashes of light on the platform do not appear simultaneous for the observer in the train. But relativity of simultaneity...

In a preprint Double-graded quantum superplane, Steven Duplij and I construct a “higher” graded version of Manin’s quantum superplane. To our knowledge, this is the first quantum space that has an underlying $latex mathbb{Z}_2^2$-grading. Outline The hunt was on to find a direct generalisation of Manin’s superplane [1] to the setting of $latex mathbb{Z}_2^2$-geometry [2]....

New story… Pamela was swept away by the powerful alien. Pamela had been driving for hours, the mountain roads were twisting and deserted this time of night or early morning. The sky was dark, no moon tonight but occasionally, she would get a glimpse of the stars through the windshield. This area of the North...

Ride like the wind! This song reminds me of taking a long trip on a big V4 motorcycle, V-Max, it stands up on it’s center stand chrome sparkling in the street lights, it has a physical presence almost deadly, it radiates power, four chromed exhausts a huge 1800cc V4 just waiting for you to climb...

New story… First contact… Sarah watched the video screen as the rover Odin crawled across the surface of the planet Asgard. It was easy to think the video was in real time, but the reality was that the newly discovered planet Asgard was a little less than a light day from Earth. When Asgard was...

This article with drawings is in these links https://www.academia.edu/40876793/Synchronizing_moving_GPS_clocks Word, PDF https://pengkuanonphysics.blogspot.com/2019/11/synchronizing-moving-gps-clocks.html PDF 1. Light pulse synchronization Can we synchronize clocks of a moving frame? Let us see Figure 1 where we have stationary frame F1 and moving frame F’2. The 2 clocks in the frame F1 are synchronized with the master clock through a...

Camping 2120 The ATV wagon crawled along the open ground, the large balloon tires made the ride soft and the headlights lit up the ground ahead to almost daylight levels in front of the first wagon in the line of five identical wagons as they crawled along. The headlamps reveled the occasional tiny snowflake reveling...

I have seen this question asked (or its fraternal twin, “when does the new decade begin”) in a number of places, and my response is this: That’s a lousy way to phrase the question.   I will remind folks that I work at the Naval Observatory, but this blog in no way represents the official position of...

In a preprint Modular Classes of Q-Manifolds, Part II: Riemannian Structures & Odd Killing Vectors Fields, I examine the notion of a supermanifold equipped with an even Riemannian metric and an odd Killing vector field that is also homological. Background In a previous post, I briefly disscussed the notion of a Q-manifold and their modular...

The “Long Earth” is a name given to a possibly infinite series of parallel worlds that are similar to Earth, which can be reached by using an inexpensive device called a “Stepper”. The “close” worlds are almost identical to “our” Earth (referred to as “Datum Earth”), while others differ in greater and greater details. Click...

Einstein’s derivation of the Lorentz Transformation is purely theoretical. This study shows how it is related to the physical phenomenon of time dilation and length contraction. The Lorentz Transformation was first derived using the conditions of time dilation and length contraction. Later, Albert Einstein has given a different derivation of the Lorentz Transformation by using...

In a short preprint The super-Sasaki metric on the antitangent bundle, I explicitly show how to lift a Riemannian metric and an almost symplectic two-form on a manifold $latex M$ to a Riemannian metric on the antitangent bundle $latex Pi T M$, which is, of course, a supermanifold. This example was first given in Modular...

The short preprint The super-Sasaki metric on the antitangent bundle, has now been extensivly rewriten and improved. I wrote about the first draft here. One of the major improvments is that I now clearly link the construction to almost Hermitian manifolds, although the almost complex structure plays no direct role in the lifting the metric...

There are 2 types of length contraction, the physical meaning of each is explained below with the help of the example shown in Figure 1. The Earth and the star are stationary and the spaceship mobile. The 2 types of length contraction are: 1) Object contraction: In the frame of the Earth the length of...

Without length contraction, time relativity transformation solves paradoxes and explains incongruent relativistic experiments, which allows us to build a transformation of coordinates without length contraction. For abscissa transformation, Figure 1 shows a spaceship in the frame of O1, its backend is at O1 and frontend at A1. At time zero the spaceship is stationary, from...

Just finished reading an excellent and provocative book: Dark Matter by Blake Crouch. The image is a fantasized depiction of me discussing the physics of this book, which is based on the concept that we live in a multiverse, with three of my doppelgangers. What would be appealing would be a work of science fiction...

A discrepancy-free transformation of velocity is derived using the Time relativity transformation of coordinates because relativistic transformation of velocity creates a discrepancy. The relativistic transformation of velocity expresses the velocity u2 of an object q in frame 2 in terms of its velocity in frame 1. In frame 2 at time tq, the position of...

Analytical derivation of relativistic velocity, mass, momentum and kinetic energy of an accelerated object. For Special relativity the momentum of an object of rest mass m0 and velocity u is expressed by equation (1) which is infinite when u equals c. Is it physically meaningful that the momentum of an object becomes infinite while its...

The theory of Time relativity explains well the weird behavior of the interstellar object ‘Oumuamua. I find that the real solar mass is slightly higher than today’s value, which caused the mysterious Speed Boost of which the value should be 0.217 mm/s above the prediction at perihelion. Time relativity confirms that ‘Oumuamua should slow down...

Like in Newtonian kinematics, the relativistic change of reference frame must be a vector system of transformation laws for position, velocity and acceleration. In special relativity, when changing the reference frame the coordinates of a moving point is transformed using Lorentz transformation. But the velocity-addition formula that transforms velocity is in a too different mathematical...