Human Definition and 880 Threads

Hi, forgot to say a thanks for all the info provided in my previous thread to everyone who posted. So what is the answer or answers to this threads question or what works?

From the abstract. The findings, it is argued, likely represent the oldest securely dated evidence for Homo sapiens in Arabia. The paleoecological evidence indicates a well-watered semi-arid grassland setting during human movements into the Nefud Desert of Saudi Arabia. We conclude that...

Man oh man this sounds like a great stay-home-spectator-event. Better than a super bowl. But we'll have to wait until 2024. https://www.washingtontimes.com/news/2020/sep/10/pentagon-2024-fight-pilot-artificial-intelligence/

Has there been a study looking for a quantum bump in human photoreceptors. I've done some searching and haven't crossed anything as of yet.

Apologies for the noob question. The frequency of the human body can be calculated based on weins law as follows: Wavelength = 0.002898/310 = 0.00000934838 m Plugging this into the equation λν = c we get frequency = 299792458 / 0.00000934838 = 32069 Ghz Elsewhere, I see that the resonant...

So I discover that a human body can affect a radio receiver. When I get close to a receiver, the radio produces buzz sound, which means that the radio signal is disturbed. However when I touch the plastic case of the receiver, the receive becomes normal. This phenomenon does not happen every...

I have situation where i have drawn a concept with 1 sheet covering width of box for model. But now i need to draw up the manufacturing drawings and it needs to lifted and assembled by 2 people. So i need to know if person weighs 70 kg how much weight they can lift without using mechanical aid...

I've been thinking and researching recently about the effect on human health by electromagnetic radiation created by communication devices such as wifi, cell phones, cell phone transmission towers and high voltage power lines What do you guys think about the energy of electromagnetic radiation...

I know that there are at least a couple of threads related to COVID-19 scattered over PF, but I want to get a specific feedback on this latest research in terms of human health and safety. This paper was published in Nature, and it presented a rather fascinating result if it is true. The...

I would like suggestions for using household items to approximate human lung capacity. Thinking my lung capacity was at issue (quick research showed it to be about 4.8 liters) I thought how I might measure it using household items and I came up with the following. The opening of a thin plastic...

I am a high school science teacher working on arts integration for thirty years in schools where many students have academic skills below grade level. I am looking for feedback.

Hi, smart people This quarantine has got me thinking: Can we get people in the air? I have 3 questions that may or may not help answer this question. But I do appreciate any insight. 1. How would one accelerate (the average human) 100 feet in the air and sustain their position? Under normal...

P=Fnet x t that is what I used for a

Greetings I am a high school science teacher and music teacher. I am finishing a unit for high school biology and 5th grade science about the human body systems. I have a question about the heart. It involves timing. I heard that the sound of the heart comes from the closing of the valves...

I keep wondering why we do not know more about the virus? How hard is it to expose some mice to Coronavirus and see what happens? Then I considered that perhaps the virus is primarily a human virus and does not effect other life forms like lab mice. There have been cases with dogs and the...

Hello, I understand that the action potential represents a potential difference variation (depolarization) of the voltage across a cell membrane. This concept is generally presented in the context of nerve cells (neurons) as the change in potential across the axon membrane. What about the...

https://www.sciencedirect.com/science/article/pii/S0370269320301040#br0210 I need to give this more thought, but the ballistics section is pretty good, and I think their basic dE/dx argument is sound: If a collision at a ballistic rate transfers about the same kinetic energy to the human body...

Human power 97 watts? 2000 kilocalories is the average human need per day. 2000 kilocalories is 8373.6 kilojoules divided by 86,400 seconds in days = 97 watts.

Hello, Human breath the following way: air at ambient pressure is pushed into the lungs during the inhaling phase because the air pressure inside the lungs is lower than ambient pressure: ##p_{inside}<p_{outside}##. During the exhaling phase, the air pressure inside the lungs becomes instead...

Science news article: Denis Rebrikov of the Pirogov Russian National Research Medical University in Moscow has been discussing how he wants to modify the human germline to correct a genetically inherited hearing loss condition. He has been discussing this for a while, plans on seeking rigorous...

Last night I watched a very intriguing sci-fi movie about human farm where children were raised to serve as reservoir of human organs. in the movie it's the face that is removed from adolescents and transferred to elderly rich clients. I can't reveal the title or it would be a spoiler. I want...

If we have full dive VR would there still be people living in real life apart from poeple who maintain the VR equipment ? I am referring to VR brain implants/BCIs not VR headsets, googles, etc? I am asking hypothetically since i know that full dive VR is still a while away If you were to give a...

if i apply a voltage to human flesh, human flesh would be at the full voltage? because i performed an experiment. i connect one end of a wire to the the palm of my hand. i connect the other end to a battery. i connect the first battery to a second battery. i connect the second battery to a...

Hello. Yesterday I was making some calculations, and I started to wonder the average number of alleles per gene the human specie have today. The best question would be how many mutations per base or how many alleles in an average 1000 base gene, as genes vary in size. What made me wonder this...

A new study (original article behind paywall, in short Science mag news article) has shown differences in dog brain anatomy. Different brain regions have been shown to be relatively larger or smaller, in different breeds. The behavioral differences that breeds were bred for correlated with the...

Trying to wrap my head around what the double-slit experiment is illustrating, it occurred to me that one could replace a mechanical detector with the human eye. I found that this was tested with what seems an elaborate test setup in 2016, and the result suggests that while an interference...

Hi I would like to know the facts about this

Hello, The human eye has an average diameter of ##2.5 cm## and an optical power between ##60D## and ##64D##. An object can be brought as close as the near point which is about ##25 cm##. If ##d_{o}=0.25m## (object distance) and ##d_{i}= 0.025m## (distance to the retina), the optical power...

crispr-as-gene-editing-human-trials-get-underway?utm_source=twitter.com&utm_medium=social&utm_campaign=npr&utm_term=nprnews&utm_content=20190416]First U.S. Patients Treated With CRISPR As Human Gene-Editing Trials Get Underway[/url] The study takes immune cells out of the patient, modifies them...

Is most of human vision processing performed in a linear step-by-step fashion in the brain or is it concurrent? Let's take for example; for the process of us recognising a pen on a table. Light/information enters the eye, is focused on the fovea part of the retina because we are focusing on...

In a story I’m working on, the antagonists are (humanoid--almost identical to humans) aliens, with 2 eyes, binocular vision. Their tech and bio-engineering is several hundred years advanced from ours. They can see the (human) visual spectrum, but also into the infrared (how far I haven’t...

I'm not sure where this thread belongs; it is essentially a topic at the intersection between quantum optics, human physiology and even psychology, but I will focus more or less on the implications for quantum physics, so I just opted for this subforum. There is a recent article over Scientific...

In a discussion between Sam Harris and Brian Greene, at this point, Brian stated that even if we return the brain and all the environment to its previous state, we "WON'T MAKE THE SAME NOISES"; I know that for example, indeterminacy in determining the precise time of decay of an atom (and the...

if the human skin consists of hydrogen, then why does not happen hydrogen bond through contact with something or with another person?

I have read many sources on DNA and still have a few questions. Let me start with this one, and depending on the answers I will ask more. Question 1. f I were to look into a human cell how would I see the DNA? Is there a single very long copy of the DNA string or are there two copies. Question...

https://apnews.com/4997bb7aa36c45449b488e19ac83e86d As detailed in the AP news story, most scientists believe the work to be unethical as the safety of the CRISPR gene editing technique used has not yet been fully established. See also...

Homework Statement While unrealistic, we will examine the forces on a leg when one falls from a height by approximating the leg as a uniform cylinder of bone with a diameter of 2.3 cm and ignoring any shear forces. Human bone can be compressed with approximately 1.7 × 10^8 N/m2 before...

Homework Statement If we assume that a human radiates like a black body, calculate the luminosity in watts, then compare it to the daily energy a human gets from eating. (The area of a human A=1.3 m2) The Attempt at a Solution The temperature of a human is 310K so L=AσT4 =...

I was surprised to see this in a 'pop science' article a few years ago ("Ask Marilyn"), but quickly found the source, which appeared reputable (to me). But I have not seen any follow up. I finally got back to it. https://www.nature.com/articles/ngeo1476 To stay within forum guidelines, please...

https://translate.google.com.br/translate?sl=pt&tl=en&js=y&prev=_t&hl=pt-BR&ie=UTF-8&u=https%3A%2F%2Fmisteriosdomundo.org%2Fessas-sao-as-7-falhas-que-o-corpo-humano-possui-em-sua-estrutura%2F&edit-text=&act=url What do you guys think about this article? Is there some error? Or the article is...

How much time the machine can overcome the human? I was thinking about around 50 years? But I am not sure. I would like that you guys can take me this doubt.

Hi lads, I couldn't find this info on Google... Are the Heart and Brain the only organs which physiological functions are based on electrical impulses? What happens if we apply electrical current through other organs? Thanks

It's easy to find descriptions of how the nervous systems of species differ in the organization of nerves, but are there any important differences in the individual cells? For example, are the individual nerve cells of insects similar to individual nerve cells of humans?

If light speed (not in a vacuum) was about human walking speed ... Did any sci fi writer try that?

https://www.cell.com/trends/ecology-evolution/fulltext/S0169-5347(18)30117-4The authors do not seem to use the term bushy to describe the non-linear evolution of Homo sapiens, but other authors have used it. They use 'African multiregionalism' instead. And also they exclude panmyxia (free for...

When the camera can oversee the human eyes?

If this is a valid enough definition of a heat engine: All heat engines transfer heat energy from higher to lower temperatures, and do work in the process. ... then is the human body a heat engine?

This Bloomberg article profiles the Lyrebird startup where AI can mimic your voice or any voice given a snippet of spoken words. and an earlier Verge article on the technology https://www.theverge.com/2017/4/24/15406882/ai-voice-synthesis-copy-human-speech-lyrebird

Not sure if this reference has been posted yet, but I just saw it come through and thought I'd share. This is the "Big Bell Test Collaboration" using measurement choices provided by persons (as opposed to computer generated "random" choices). (The authors are a virtual who's who in the world...

Hello Everyone, Sunlight is composed of UV, visible and infrared (IR) over a wavelength range from ~290nm to ~2500nm. When we are exposed to sunlight and feel hot, is it because of the absorption of energy at the visible wavelengths and FIR, i.e . infrared wavelength much larger than 2500nm? I...