Sunday, October 1
Einstein Was Wrong About Gravity
Einstein's theory of gravity—general relativity—has been very successful for more than a century. However, it has theoretical shortcomings. This is not surprising: the theory predicts its own failure at spacetime singularities inside black holes—and the Big Bang itself.
Unlike physical theories describing the other three fundamental forces in physics—the electromagnetic and the strong and weak nuclear interactions—the general theory of relativity has only been tested in weak gravity.
Deviations of gravity from general relativity are by no means excluded nor tested everywhere in the universe. And, according to theoretical physicists, deviation must happen.
Deviations and quantum mechanics
According to a theory initially proposed by Georges LemaƮtre and widely accepted by the astronomical community, our universe originated in a Big Bang.
Naively, spacetime singularities should be resolved by quantum mechanics, which apply at very small scales.
Quantum physics relies on two simple ideas: point particles make no sense; and the Heisenberg uncertainty principle, which states that one can never know the value of certain pairs of quantities with absolute precision—for example, the position and velocity of a particle.
Saturday, September 30
A New America
The Republicans have a slim majority in the House and are fighting among themselves for power rather than coming together as a single voice to do battle with the Democrats...
The Democrats have managed to get mainstream media on their side along with the DOJ and the FBI who are not supposed to be political, to take power away from the Republicans...
The citizens of America will soon realize, if they do not already that there are more of them than there are law enforcement personnel whose job it is to force Americans to obey the laws of the land...
The laws of the land, DO NOT APPLY to all the illegal immigrants flowing across our southern borders - If they are willing to break the laws to get here, do you really think they will obey all the other laws once they are here... (Rhetorical Question)
There is a huge push to do away with gasoline vehicles, substituting them for electric vehicles - however, there is currently no infrastructure in place to support all those EVs - this is putting the cart before the horse...
There has been a HUGE INCREASE in illegal drugs and crime in the USA ever since Joe Biden became President - there appears to be a direct correlation here that we are trying to ignore...
Colleges and Universities have diluted and dumbed down their courses so that there are no failures and they can protect their streams of revenues...
China's threat at dominating the world is largely being ignored by the USA authorities because of our nuclear arsenal - they fail to see that this domination will be economical in nature...
The billionaires of the world have a HIDDEN AGENDA that they do not want to share with the rest of the world but it involves destroying the system that made them wealthy in the first place...
For Over Thirty Years Now
I have been in a relationship that turned into a marriage where I do very little other than what I need to do around the house and want to do for my pleasure.
Let me explain:
- My wife does all the shopping
- My wife writes all the checks
- My wife balances the check book
- My wife plans out our vacations
- My wife researches for new vehicles
- My wife landscapes the yard outside
- My wife decides on inside decor
- My wife selects all appliances and furniture
- My wife does all the cleaning
- My wife does all the washing and ironing
- My wife does all the interior painting
ESV: A Lithium Free Battery
Nickel-hydrogen-based batteries that have long been used by NASA for its space missions are now making their way to power the grid. California-based EnerVenue is building large Energy Storage Vessels (ESVs) that could be used to power the grid using renewables, a press release said.
With the world making a major transition to renewables, energy storage solutions are the need of the hour. Lithium-ion batteries have been our best bet so far but making large-scale storage solutions is turning out quite expensive and cumbersome.
Li-ion batteries are prone to thermal runaway and large energy storage solutions need additional facilities for cooling, ventilation, and fire suppression to be built to prevent a major mishap. This is where nickel-hydrogen-based batteries could help.
How does a nickel-hydrogen battery work?
A nickel-hydrogen battery is much like any other battery with stacks of electrodes but held inside a pressurized gas tank. The cathode is made of nickel hydroxide, while the anode is hydrogen. When the battery is charged, the reaction produces hydrogen gas, which is oxidized during the discharging process to form water.
The energy-storing process, which involves the production of highly combustible hydrogen gas and a pressurized tank to contain it, raises doubts. However, the peak pressure inside the tank reaches only five percent of that in a hydrogen fuel cell. Moreover, if the pressure of the gas increases further, it results in the conversion of the gas into water again. READ MORE...
Friday, September 29
Decisions... Decisions...
We decide quite early in life whether or not we want to follow our parents' advice or not. In so doing, the decision sometimes works to our advantage and sometimes to our disadvantage.
Later when we are in school, we make the decision of whether or not we want to listen to our teachers and whether or not we want to do the homework that we have been assigned to do.
For those of you who grew up with only one parent, those decisions were influenced differently than those who grew up with two parents.
After high school, we made decisions about:
- college
- marriage
- children
- divorce
- military
- employment
- relocation
American Made
Politically, he did an excellent job representing the Democrats but logically he demonstrated a lack of compassion and a lack of understanding that ANY government shutdown is always a result of both parties... not just one. In so doing, he demonstrated to this viewer, that Democrats have become so progressive that they are no longer willing to compromise.
However, what struck me as more important was his comment about Electric Vehicles WILL EVENTUALLY REPLACE gasoline vehicles and do you want those vehicles manufactured in China or the USA?
That's the question that got me to thinking...
If EVs are made in America (USA) then they will cost more than if they are made in China, where the cost of labor is LOW.
AMERICAN MADE is a term that all of us want t support, but American Made can only be purchased by the wealthy... our middle classes or lower classes will never be able to afford American Made unless many of them go into debt in order to take possession.
In addition to debt ownership, if the battery ever needs to be replaced, they will be forced to invest (borrow) another $8-$10,000. True, the cost of these replacement batteries will eventually come down, but in the meantime, to these average Americans, that will not matter.
ON THE OTHER SIDE OF THE COIN, if China builds these electric vehicles, then they will become wealthy and their economy will grow faster than the economy of the USA. With a more powerful China, the USA will have to face a more powerful adversary for decades to come.
Does anyone know what the true right decision really is?
Programming a Neural Network
In this article, we will build a neural network from scratch and use it to classify handwritten digits.
Why reinvent the wheel/neural network, I hear you say? Can’t I just use my favourite machine learning framework and be done with it? Yes, there are many off-the-shelf frameworks that you can use to build a neural network (Keras, PyTorch, and TensorFlow to name a few). The thing with using one of these is that they make it easy for us to treat neural networks like black boxes.
This isn’t always a bad thing. Often we need this level of abstraction so that we can get to work on the problem at hand, but we should still strive to at least have a basic understanding of what is going on under the hood if we are to use neural networks in our work.
Building a neural network from scratch is, in my opinion, the best way to foster a deep understanding of how they work.
By the end of this article, you will have learned about the feedforward and backpropagation algorithms, what an activation function is, what the difference between an epoch and a batch is, and how to train a neural network. We will finish with an example by training a neural network to recognise handwritten digits.
All code used in this article is available here on GitHub
Neural networks, or artificial neural networks, are a type of machine learning algorithm. They form the core of many deep learning and artificial intelligence systems like computer vision, forecasting and speech recognition.
The structure of artificial neural networks is sometimes compared to the structure of biological neural networks in the brain. I would always urge caution not to draw too much from this comparison. Sure, artificial neural networks look a bit like biological neural networks but it is quite a big leap to start comparing them to something as complex as a human brain.
A neural network is made up of several layers of neurons. Each layer of neurons is activated based on the activations in the previous layer, a set of weights connecting the previous… READ MORE...
Political Party Differences
Democrats
The party favors a mixed economy and generally supports a progressive tax system, higher minimum wages, Social Security, universal health care, public education, and subsidized housing.
Republicans
The party's fiscal conservatism includes support for lower taxes, small government conservatism, free market capitalism, free trade, deregulation of corporations, and restrictions on labor unions.
- Right now, the Democrats have created the following scenarios:
- Open Borders for illegal immigrants
- Higher prices especially in the areas of food and gasoline
- Higher taxes more corporate regulations
- an increase in social programs
- A huge national debt that someone will eventually have to pay off
- A decrease in our military's capabilities
- A war on fossil fuels and the death or gasoline
- An increase in racism due to BLM, WOKE, and CRT
- An increase in crime and violence
Boosting Quantum Devices
MIT physicists, inspired by noise-canceling headphones, have advanced the coherence time of quantum bits by 20-fold, marking significant progress for quantum computing. The team used an “unbalanced echo” technique to counteract system noise, and they believe further improvements are possible. This breakthrough has vast potential, from quantum sensors in biology to advancements in quantum memory.
MIT researchers develop a protocol to extend the life of quantum coherence.
For years, researchers have tried various ways to coax quantum bits — or qubits, the basic building blocks of quantum computers — to remain in their quantum state for ever-longer times, a key step in creating devices like quantum sensors, gyroscopes, and memories.
A team of physicists from MIT have taken an important step forward in that quest, and to do it, they borrowed a concept from an unlikely source — noise-canceling headphones.
Led by Ju Li, the Battelle Energy Alliance Professor in Nuclear Engineering and professor of materials science and engineering, and Paola Cappellaro, the Ford Professor of Engineering in the Department of Nuclear Science and Engineering and Research Laboratory of Electronics, and a professor of physics, the team described a method to achieve a 20-fold increase in the coherence times for nuclear-spin qubits.
“This is one of the main problems in quantum information,” Li says. “Nuclear spin (ensembles) are very attractive platforms for quantum sensors, gyroscopes, and quantum memory, (but) they have coherence times on the order of 150 microseconds in the presence of electronic spins … and then the information just disappears.
Thursday, September 28
New Way to Measure Dark Energy
Researchers have discovered a method to potentially detect and measure dark energy by examining the motion between the Milky Way and Andromeda galaxies. This technique, still in its early stages, can estimate the upper value of the cosmological constant, a simple model of dark energy, which is five times higher than values determined from the early universe.
Researchers from the University of Cambridge have discovered a new way to measure dark energy – the mysterious force that makes up more than two-thirds of the universe and is responsible for its accelerating expansion – in our own cosmic backyard.
The researchers found that it may be possible to detect and measure dark energy by studying Andromeda, our galactic next-door neighbor that is on a slow-motion collision course with the Milky Way.
Since it was first identified in the late 1990s, scientists have used very distant galaxies to study dark energy but have yet to directly detect it.
Although the technique is still early in its development, the researchers say that it could be possible to detect dark energy by studying our own cosmic neighborhood. The results are reported in The Astrophysical Journal Letters.
Everything we can see in our world and in the skies – from tiny insects to massive galaxies – makes up just five percent of the observable universe.
Stamping Out Greed
However, it is a losing battle.
We must look at GREED from several different angles in order to have enough information to make an intelligent decision.
- First, we have corporate greed
- Second, we have individual greed
- Third, we have political greed
- Fourth, we have economic greed
- How much of a profit do you think is reasonable for companies to make?
- Should companies stop giving management bonuses?
- Should individuals not be allowed to shelter their money from taxes in offshore back accounts?
- How much of a wage increase can a company offer before it has to start increasing prices?
Neutrinos and Dark Matter
PNNL chemist Isaac Arnquist examines ultra-low radiation copper cables specially created for sensitive physics detection experiments. Credit: Andrea Starr, Pacific Northwest National Laboratory
Ultra-low radiation cables reduce background noise for neutrino and dark matter detectors.
Imagine trying to tune a radio to a single station but instead encountering static noise and interfering signals from your own equipment. That is the challenge facing research teams searching for evidence of extremely rare events that could help understand the origin and nature of matter in the universe.
Around the world, more than a dozen teams are listening for the pops and electronic sizzle that might mean they have finally tuned into the right channel. These scientists and engineers have gone to extraordinary lengths to shield their experiments from false signals created by cosmic radiation.
Ultra-low radiation cables reduce background noise for neutrino and dark matter detectors.
Imagine trying to tune a radio to a single station but instead encountering static noise and interfering signals from your own equipment. That is the challenge facing research teams searching for evidence of extremely rare events that could help understand the origin and nature of matter in the universe.
Around the world, more than a dozen teams are listening for the pops and electronic sizzle that might mean they have finally tuned into the right channel. These scientists and engineers have gone to extraordinary lengths to shield their experiments from false signals created by cosmic radiation.
Wednesday, September 27
Peace Through Strength
At the time, I was a Democrat and thought it was ludicrous to have a Hollywood actor become President of the United States. However, he had been governor of California and that did not bother me too much... but President... that was going a little too far for me.
Over the years, I left the Democratic Party and became a conservative, not at Republican, because of the business angle that the conservatives represented.
- Small Government
- Less Taxes
- Less Government Regulations
- Strong Military
- Less Social Programs
- Corporate Power and Wealth
- Marginal Wealth For Most Americans
- Less Consumer Protection
- China is a communist country
- Russia is a communist country
- North Korea is a communist country
- Iran favors communism over democracy
- Our global economy would suffer
- There would be an elimination of FREEDOM
ChatGPT Art Generator
OPENAI HAS ANNOUNCED Dall-E 3, its latest AI art tool. It uses OpenAI’s smash-hit chatbot, ChatGPT, to help create more complex and carefully composed works of art by automatically expanding on a prompt in a way that gives the generator more detailed and coherent instruction.
What’s new with Dall-E 3 is how it removes some of the complexity required with refining the text that is fed to the program—what’s known as “prompt engineering”—and how it allows users to make refinements through ChatGPT’s conversational interface.
Take this image of the potato king, for example.
This kind of quirky AI-generated art has become commonplace on social media thanks to a number of tools that turn a text prompt into a visual composition.
That’s a big step forward not just for Dall-E, but for generative AI art as a whole. Dall-E, a portmanteau of the Pixar character Wall-E and the artist Salvador DalĆ that was announced in 2021 and launched in 2022, consists of an algorithm that’s fed huge quantities of labeled images scraped from the web and other sources.






















