FLRW

The FLRW metric serves as the standard geometric framework for modern cosmology that describes an expanding universe consistent with Big Bang observations.

The Friedmann–Lemaître–Robertson–Walker metric assumes the universe is homogeneous and isotropic (the Cosmological Principle). When combined with Einstein’s field equations, it yields the Friedmann equations, which describe how the universe expands or contracts over time.

Key distinctions include:

  1. Model vs. Proof: The FLRW model is a mathematical solution that predicts expansion; the Big Bang is the physical interpretation that the universe evolved from a hot, dense state.
  2. Observational Support: Evidence like galaxy redshift and the Cosmic Microwave Background (CMB) supports the FLRW model, but the model itself relies on idealized assumptions (like perfect uniformity) that do not account for local structures like galaxies.
  3. Current Challenges: Recent studies suggest the FLRW model may be incomplete or flawed, as some observations (like the CMB dipole) disagree with its predictions, indicating the universe may not be perfectly homogeneous.

Thus, the FLRW metric provides the foundational structure for the Big Bang theory but does not constitute a standalone proof, and its assumptions are subject to ongoing scientific scrutiny.


FLRW

When I was growing up, a McDonald's opened up in our neighbor hood. This was in the 1950's The total cost for 3 meals was $1.

FLRW

Bose–Einstein condensates have been produced using a wide variety of bosonic isotopes, primarily alkali metals, alkaline earth metals, and lanthanides, as well as molecules, quasiparticles, and photons.

The most common atomic species include:

  1. Alkali metals: Rubidium-87 (the first gaseous BEC, created in 1995), Sodium-23, Lithium-7, Potassium-39, Potassium-41, Cesium-133, and Chromium-52.
  2. Alkaline earth metals: Calcium-40, Strontium-84, Strontium-86, and Strontium-88.
  3. Lanthanides: Ytterbium-170, Ytterbium-174, Ytterbium-176, Dysprosium-164, Erbium-168, and Thulium-169.
  4. Other atoms: Helium-4 (superfluid state) and Hydrogen-1. 


FLRW

Religion is widely understood by anthropologists and psychologists as a human invention developed to address fundamental psychological and social needs in early human societies.

Key reasons for its creation include:

  1. Control over the unknown: Early humans used rituals and deities to explain unpredictable natural events like weather, disease, and death, reducing feelings of powerlessness and fear.
  2. Social cohesion and order: As groups grew from small tribes to larger agrarian societies, religion provided a shared identity, moral codes, and a system of laws to unify diverse people and maintain order without centralized police forces.
  3. Enhanced self-control and cooperation: Research suggests religious belief enhances self-discipline and encourages prosocial behavior, allowing larger groups of strangers to cooperate and survive.
  4. Existential comfort: The concept of an afterlife and divine judgment helped humans cope with the terror of mortality and provided meaning to suffering.

While many religious traditions view faith as divinely revealed, the secular view holds that these systems were constructed by humans to ensure survival, facilitate group cooperation, and provide psychological stability in a chaotic world.


FLRW

Minoxidil (commonly sold as Rogaine or Regaine) is the most effective and widely used medication for stimulating beard growth. Although FDA-approved only for scalp hair loss, it is frequently used off-label to thicken and fill in patchy beards by acting as a vasodilator that increases blood flow to hair follicles and prolongs the hair growth phase.

Clinical evidence supports its efficacy, with studies showing that applying a 3% minoxidil solution twice daily for at least 16 weeks can significantly increase facial hair count and density compared to a placebo. While results vary by individual and genetics, consistent use is generally required to maintain any achieved growth, as stopping the treatment may cause new hairs to shed. Other options like Finasteride or testosterone therapy are primarily used for scalp hair loss or medical conditions and are not typically recommended specifically for enhancing beard thickness. 


FLRW

The Quinque Viae (Five Ways) are five logical arguments for the existence of God presented by St. Thomas Aquinas in his 13th-century work, the Summa Theologica. Critics often dismiss them as flawed due to reliance on Aristotelian physics, undefined causation, and assumptions that do not align with modern scientific understanding.

Common Criticisms

  1. Philosophical Obsolescence: Arguments are built on Aristotelian concepts of motion and causality that modern physics (e.g., quantum mechanics) challenges.
  2. Logical Fallacies: Critics argue the premises (e.g., "everything needs a cause") contradict the conclusion (God does not need a cause), constituting special pleading.
  3. Definition of God: The arguments may prove a "prime mover" or "first cause," but critics argue they do not substantiate the specific attributes of the Christian God (e.g., benevolence, omniscience).
  4. Teleological Flaws: The evolutionary theory of natural selection provides a non-intelligent explanation for the complexity and regularity observed in nature, undermining the need for a designer.


FLRW

With more than 99 percent of Tuesday’s ballots tallied, Netanyahu’s bloc held 53 seats in the 120-member Knesset while the opposition bloc led by Gadi Eisenkot secured 48 seats, Israeli outlet Haaretz reported. The Arab list parties, meanwhile, held a combined 19 seats, it added.

Both Netanyahu’s bloc and the opposition parties fell short of securing the 61 seats required for a parliamentary majority.

FLRW

Any perceived benefits from pheromone products are likely due to the placebo effect, increased confidence, or the general pleasantness of the fragrance interacting with individual body odor, rather than any chemical seduction mechanism. 

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I think it’s safe to say that Samson is a folk tale, not history.

A theology professor once quipped, “ Everything in the Bible is true, and some of it really happened.”

Samson, identified as one the judges of Israel before the monarchy, bears a resemblance to other Near Eastern folk heroes in Sumerian and Greek theology. It is possible to derive meaning from the Samson story without insisting that he is an historical figure; if your applecart of faith is going to come tumbling down if you learn that Samson is a folkloric figure, you have big problems.


FLRW

If we use electronic photodetectors instead of our eyes, we discover that all the light in the Universe is made up of the same type of particle: the photon. It has a few properties that are the same between all photons:

  1. its mass (which is 0),
  2. its speed (which is always c, the speed of light),
  3. its spin (which is always 1, a measure of its intrinsic angular momentum),

and one very important one that varies: its energy. Violet light has the most energy of any photon that's visible to human eyes, while red has the least energy of any visible photon. At even lower energies are infrared, microwave, and radio photons, while ultraviolet, X-ray, and gamma ray photons can be found at higher energies. The size, wavelength and temperature/energy scales that correspond to various parts of the electromagnetic spectrum.

NASA and Wikimedia Commons user Inductiveload

Through the vacuum of space, no matter what their energy is, they always travel at the speed of light. It doesn't matter how quickly you chase after or run towards light, either; that speed you view it traveling at will always be the same. The thing that shifts, instead of its speed, will be the light's energy. Move towards light and it appears bluer, boosting it to higher energies. Move away from it and it appears redder, shifted to lower energies. But none of that, no matter how you move, how you make the light move, or how you change the energy, will cause the speed of light to change. The highest-energy photon and the lowest-energy photon ever observed both travel at exactly the same speed.

From:https://www.forbes.com/sites/startswithabang/2017/07/29/ask-ethan-does-light-always-move-at-the-same-speed/

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I think you look fine. You kind of look like the actor Ian McKellen at that age.

See https://rarehistoricalphotos.com/celebrities-when-they-were-young/

FLRW

Yes, climate change is real and unequivocally driven by human activity. Scientific consensus, supported by NASA, the Royal Society, and the IPCC, confirms that Earth is warming at an unprecedented rate, with the last decade being the warmest on record. 

FLRW
When I was in high school, a girl told me that I am her nightmare.


OMG, I bet she thought you had something too big!