Most Viewed Science Blogs (319)

I'm sure everyone has heard the name Doppler. Yeah... but what is it? The Doppler effect (or Doppler shift) is most noted in sound waves when a train approaching has a different sound after it passes you. It's a pressure shift as the sound waves coming are different than going.
Austrian mathematician and physicist Christian Andreas Doppler is the guy celebrated for his principle known as the Doppler effect.

Here's a short video explaining the Doppler effect:

So the blue Jays have been eating my cat`s food . Now I just place a mirror behind the cat bowel . Seems to be working..Bird see him self in mirror and freaks out-flies away..

22 year old Joe DiMeo survived a car accident but his face and hands were severely burned. Doctors at NYU Langone Health in New York successfully performed a face and double hand transplant in August 2020 and so far there are no signs of rejection.
The surgery lasted more than 20 hours and he must remain on medicine for life for his body to avoid rejecting the transplants.

Note, the video is graphic so you may want to avoid watching if you get queasy with things like this.




Yahoo! picked up the story this morning:

Does the universe operate on averages, or do we use averages to deceive ourselves?


....an example...

I was just sorting out some items that have been randomly assigned 4 digit numbers. There was a stack of about 70 items.

I was sorting them in piles by their first digit. About half way through, I noticed that each pile had about 4 or 5 items in it while the #3 pile had none. I thought to myself about averages and is their any validity to them? The next item in the pile I was sorting was an 8, then the next one was a 3. Okay, my first 3. I thought well, that 3 stack is still low...if average may have validity, there should be more 3's coming. And wouldn't you know it, shortly afterwards, there were 3 more 3's.


Happy Thursday all.

. advantage Closure... Entropy.

..the Arrow of Time. | ..get yourself up./ Head east
...... set Controls for heart of Sun./ .p. Floyd
Heart of the sunrise. } Y E S.
...also ran. ) .pure Energy / Information Society
. synthesis. ) .past, present, future./ Brain ticket.
... Meanwhile, ..in the Dictionary of Strength, there
.be Strong medicine for weak sheople & sinner-folk.
3791. .the ] scribe pictures.
. 723. .feed..) and/ or food 4 mcthought.
3068.....Jer. 10:10 , 15:16
..UV sun + physics + number = a scribe picture.
..3068...yhwh..| psalm 33:11
....848. his
2220. Arm... exodus chapt.6.
..........H O T. 2527..) .per a change in logic within the
System / scroll..the Energy remains constant.
....right hand. 541.
3519. Ka'bod............... .... 3519. Heavy x Splendor
3068.... Neh. 8:10.............. 469. El of treasure
0451. Strong [ Concordance..3050. yah | short form of 3068.
....6119. Footstep.[ .s
....3050...... yah. } .who is.
... 3069...from 3068. } .who is & was & is to come
.........(. Psalm 77:19. ) .....
1916. . footstool.
1152. Counsel of yah.
3068......psalm 110.
.. epilogue...
Making Time / the Creation
5,4,3,2,1../ Mann
Yhwh / U2..
...also ran.} Times Up. } Living Colour

The progress of AI can not be prevented according to experts, and the future of
this planet is in jeopardy. As long as there are countries that suppress their population, the number of new ways to observe individuals behaviour will increase, and anyone who steps out of line with government policies would be taken care of. Also the development of armies of robots would be inevitable, and would replace humans, and could be used to invade weaker countries.
Already, closed circuit cameras are used in autocracies such as China, to watch their citizens, and what hope is there to ever reverse the future escalation of AI.

Human Evolution ...

Adam & Eve Genetics ...

Noah's Flood Genetics ...

@ 10:30 A Personal sticking point -
According to human evolution, Humans essentiallyly as intelligent as people today arrived on the scene 150,000 - 75,000 years ago.
About 12,000 years ago they discovered that planting seeds grew plants that produced food (aka - farming).

It seems it would've taken Much Less than 60,000 - 140,000-ish years for Someone to figure that out ...

Whatever.
Judge For Y'all's Selves -
I Know that's Exactly what Every One of y'all's Gonna do, anyway ...

So I try to introduce tidbits of other things into each lecture. Here, I relate how my grieving is lessened by the dear hearts of the young ladies in the busy beaver front row of the class. Very busy beaver. The loss, over just one month, of both of two wonderful kitties, weighs heavily on this otherwise hardened racist/sexist/multiphoboc Vierk heart. Miss Angel, huntress extraordinaire Maine coon cat, still presenting the women next door with all sorts of prey---voles, moles, mice and yes, the odd chipmunk as well---even during her frail last days. And huge calico Miss Lilly, who left us just yesterday, community greeter suprema, who on her last days, nearly blind, and barely still able to walk, sat on the front lawn in the warm mid spring sun, allowing passers by to scratch her on the favorite spot, under the chin. Purring right to the very end.
And how about these young budding pubic health students, now numbering almost 20, in their loose blouses and short skirts, all with the flashy red FM heels a going, informing me of their great sacrifice to help with the C-19 pander demic. It brought tears to these old eyes to hear that each and every one of these civic minded angels, is forgoing the use of undies, while sitting up front with your epididimis prof, just so that the fabrics can be better used for masks in the war against the great enemy, the deadly virus, as now called by our dear leader, Mr. Trump. With youth such as this, all I can say is,--- what a country! Chases away the kitty loss blues.But enough digression.
Now then, just how does evidence emerge from Epid? Again there are several levels of validity of such evidence, corresponding to the designs of the respective study approaches. At the most basic level, as with our cousin scientists, the demographers, descriptions of populations of individuals, some quite sophisticated, can yield very useful information. From predicting the clinical/hospital needs of a community, as in Health services Epid, to generating novel hypotheses, for analytical investigators, this research is vital. With these data, the more analytically minded crowd can employ various study designs, to explore the relationships between health/disease in these populations, and various factors of interest. And here's the kicker. In the more natural sciences, one can compare groups of lab animals, both control and groups exposed to the factors under study, PROSPECTIVELY, and see where the cards fall. But in Epid, methods exist to perform such investigations using historical data, as well as going forward.
The scope of these designs are beyond this course level, but your teacher would be happy to explain all of them, in his office, after class, but only to students, sequentially, one hour each, as individuals. Here, these approaches however will be named, so google away. Again, from most basic, to sophisticated, these include: ecological (correlations only) designs; cross sectional (lacking time dimensionality) investigations; case control studies-enabling the investigation of historical relationships, if only for one illness at a time; cohort designs, both forward and backward looking, by analogy with research with lab animals. And sometimes, these approaches can be combined, as in nested case control within cohort studies, say of defined worker populations.
Now the so called gold standards of these investigations are the various types of clinical trials, which strictly speaking, takes us into the field of clinical Epid. Often described as multi arm, randomised, blinded, power driven, etc., investigations,-- these are used to study the efficacy of medical interventions, such as new drugs, and diagnostic and surgical technologies. And taking all of this now to the realm of public health, we see the community clinical trials, which often are useful for policy decisions. Next time, this leads into the topics of epidemics.
By the way, my lovely beavers, the perfumes are great. class over.

We need stop thinking about maximizing the next quarterly dividend and massive tax cuts
and start investing in our future.



I expect most of this CS crowd won't bother listening to this Ted Talk - to any Ted Talk.
Then again maybe some of you will.

----...the powerful glorious Sun.... Sadly, my formidable formal full scientific training doesn't include astrophysics, much less heliography, but I do know which end of my telescope to look into. And how to monitor sunspots, an important feature of amateur radio communications, and much, much more. The latter vary in their frequency of cycles and density, over the decades. But every century or so, these features of solar magnetic storms, and probably much more, get much more misbehaved. Sometimes they seem to correlate with periods of climate changes. As recently? Now, who knows how important are the roles all this, including mass coronal ejections, play in recent alleged or real climate changes? But it is striking how little we hear about the Sun's role in it all. The few real solar studies scientists have little to say, and when so, it's often muted and in lockstep. "No, no, it's all man made carbon/methane emissions." And by implication, the evil corporate capitalists. Hey there, Crazy Bernie. So I'm humbly thinking, why not more attention is being paid to the possible effects of such an all powerful good neighbor. Sure, some of the greenhouse gas theories make sense to me, but seems like there just might also be an elephant in the living room as well. But what do I know?