superluminal

"Don't post anything racist/misogynistic/pornographic, loli images, or any animated GIFs and you should be fine, haha!" The Raytownian

Moderator: xome

killing raven sun
Posts: 1032
Joined: Wed Jun 13, 2018 2:01 pm

Re: superluminal

Post by killing raven sun » Mon Aug 13, 2018 4:50 am

jliat wrote:
Mon Aug 13, 2018 4:42 am
So i'll leave just this reply to the others.
very few read your posts or care about your unlistenable projects
jliat wrote:
Mon Aug 13, 2018 4:42 am
Get over it, go for a walk or something.
maybe take your own advice, i walk many miles each day, keeps the mind running clear, as clear as an unmuddied puddle
jliat wrote:
Mon Aug 13, 2018 4:42 am
The 'reading' relates to the maths involved with SR.
but you cant understand it so dont bother, just go for a walk

User avatar
jliat
Posts: 2777
Joined: Tue Nov 20, 2012 1:34 am
Contact:

Re: superluminal

Post by jliat » Mon Aug 13, 2018 5:03 am

killing raven sun wrote:
Mon Aug 13, 2018 4:15 am
In four-wave mixing, researchers send 200-nanosecond-long "seed" pulses of laser light into a heated cell containing atomic rubidium vapor along with a separate "pump" beam at a different frequency from the seed pulses. The vapor amplifies the seed pulse and shifts its peak forward so that it becomes superluminal. At the same time, photons from the inserted beams interact with the vapor to generate a second pulse, called the "conjugate" because of its mathematical relationship to the seed. Its peak, too, can travel faster or slower depending on how the laser is tuned and the conditions inside the laser.

In the experiment, the pulses' peaks arrived 50 nanoseconds faster than light traveling through a vacuum.

And here is the conclusion...

The answer to whether meaningful information can travel faster than light is currently no.



killing raven sun
Posts: 1032
Joined: Wed Jun 13, 2018 2:01 pm

Re: superluminal

Post by killing raven sun » Mon Aug 13, 2018 5:12 am

killing raven sun wrote:
Mon Aug 13, 2018 3:39 am
Finally, when the transparent anomalous dispersion
becomes very steep such as for the case illustrated in
Fig.1, the dispersive term ν dn/dν which is negative be-
comes very large in its magnitude such that |ν dn/dν| ≫
1, resulting in a negative group velocity vg = c/[n +
ν dn/dν] < 0. In this case, Eq.(18) gives I(L, t) =
I(0, t + |L/vg|), where the quantity |L/vg| = |ng|L/c
is positive and can becomes very large compared to the
vacuum transit time L/c. This means that the intensity
at the output of the medium of length L, I(L, t), will vary
in time earlier than that of the input pulse I(0, t). Thus
in this case, a “negative transit time” can be observed.

The time difference between the output pulse and the in-
put pulse in the form of a pulse advancement, is |ng| fold
of the vacuum transit time L/c. Practically, since the
shape of the pulse is not changed, this results in a rather
counterintuitive phenomenon where a certain part of the
light pulse has already exited the medium before the cor-
responding part of the incident light pulse even enters by
a time difference that is |ng| times of the vacuum transit
time L/c.

This rather counterintuitive effect is a result of the
wave nature of light.
this observation of 'faster than light speed' was made using information, therefore information travelled faster than light in a vaccuum

User avatar
jliat
Posts: 2777
Joined: Tue Nov 20, 2012 1:34 am
Contact:

Re: superluminal

Post by jliat » Mon Aug 13, 2018 5:15 am

killing raven sun wrote:
Mon Aug 13, 2018 4:15 am

my quoted science from observation trumps your attempted refutation of reality by maths, anyway...
At the same time, photons from the inserted beams interact with the vapor to generate a second pulse, called the "conjugate" because of its mathematical relationship to the seed.
OMG!

You did it again - !

I think I need to stop - its fish in a barrel....

killing raven sun
Posts: 1032
Joined: Wed Jun 13, 2018 2:01 pm

Re: superluminal

Post by killing raven sun » Mon Aug 13, 2018 5:21 am

jliat wrote:
Mon Aug 13, 2018 5:15 am
killing raven sun wrote:
Mon Aug 13, 2018 4:15 am

my quoted science from observation trumps your attempted refutation of reality by maths, anyway...
At the same time, photons from the inserted beams interact with the vapor to generate a second pulse, called the "conjugate" because of its mathematical relationship to the seed.
OMG!

You did it again - !

I think I need to stop - its fish in a barrel....
omg is right, i didnt realize how stupid you really are, you actually think this is some gotcha moment...
Image

User avatar
jliat
Posts: 2777
Joined: Tue Nov 20, 2012 1:34 am
Contact:

Re: superluminal

Post by jliat » Mon Aug 13, 2018 5:27 am

killing raven sun wrote:
Mon Aug 13, 2018 5:12 am
this observation of 'faster than light speed' was made using information, therefore information travelled faster than light in a vaccuum

Yes the scientists made the observations, and used the information to do the math to do calculations, but they nor the maths were travelling faster than light. And neither they or the information was in a vacuum.

User avatar
jliat
Posts: 2777
Joined: Tue Nov 20, 2012 1:34 am
Contact:

Re: superluminal

Post by jliat » Mon Aug 13, 2018 5:32 am

killing raven sun wrote:
Mon Aug 13, 2018 5:21 am
Of course The Enterprise does travel faster than light!


Look - i dont actually care, its just that as of yet nothing has travelled faster. And all the citations are from scientists using maths, and SR, and QM. None of which you believe in....

and if one day using all the smart maths and the LHC they do manage to break the limit, fine by me.

If you really want to argue, why not use black holes, as supposedly inside all the laws break down and you can dream up anything you like...

killing raven sun
Posts: 1032
Joined: Wed Jun 13, 2018 2:01 pm

Re: superluminal

Post by killing raven sun » Mon Aug 13, 2018 5:32 am

jliat wrote:
Mon Aug 13, 2018 5:27 am
killing raven sun wrote:
Mon Aug 13, 2018 5:12 am
this observation of 'faster than light speed' was made using information, therefore information travelled faster than light in a vaccuum

Yes the scientists made the observations, and used the information to do the math to do calculations, but they nor the maths were travelling faster than light. And neither they or the information was in a vacuum.
Image

killing raven sun
Posts: 1032
Joined: Wed Jun 13, 2018 2:01 pm

Re: superluminal

Post by killing raven sun » Mon Aug 13, 2018 5:34 am

jliat wrote:
Mon Aug 13, 2018 5:32 am
Look - i dont actually care,
Image

User avatar
jliat
Posts: 2777
Joined: Tue Nov 20, 2012 1:34 am
Contact:

Re: superluminal

Post by jliat » Mon Aug 13, 2018 5:35 am

killing raven sun wrote:
Mon Aug 13, 2018 5:21 am
omg is right, i didnt realize how stupid you really are,


Yes i've noticed your inability before on this topic. Given your claims to knowledge.... seems you were wrong.

killing raven sun
Posts: 1032
Joined: Wed Jun 13, 2018 2:01 pm

Re: superluminal

Post by killing raven sun » Mon Aug 13, 2018 5:36 am

Image

killing raven sun
Posts: 1032
Joined: Wed Jun 13, 2018 2:01 pm

Re: superluminal

Post by killing raven sun » Mon Aug 13, 2018 5:49 am

jliat wrote:
Mon Aug 13, 2018 5:35 am
killing raven sun wrote:
Mon Aug 13, 2018 5:21 am
omg is right, i didnt realize how stupid you really are,


Yes i've noticed your inability before on this topic. Given your claims to knowledge.... seems you were wrong.
yeah, no, thats all on you, observations of your posting reveal a decline in coherent thoughts and an inability to contextualize information, probably just natural cognitive decline from eating a standard western diet devoid of real nutrients, so you are just getting stupider

User avatar
jliat
Posts: 2777
Joined: Tue Nov 20, 2012 1:34 am
Contact:

Re: superluminal

Post by jliat » Mon Aug 13, 2018 5:57 am

killing raven sun wrote:
Mon Aug 13, 2018 5:49 am

yeah, no,
? yes no?
killing raven sun wrote:
Mon Aug 13, 2018 5:49 am

thats all on you, observations of your posting reveal a decline in coherent thoughts and an inability to contextualize information, probably just natural cognitive decline from eating a standard western diet devoid of real nutrients, so you are just getting stupider
Ah - so all those 'eating a standard western diet ' are just getting stupider? You've noticed this, all around you... everywhere... interesting... :chin:


Anyway good to see you reference me in your sig, all publicity is good.

killing raven sun
Posts: 1032
Joined: Wed Jun 13, 2018 2:01 pm

Re: superluminal

Post by killing raven sun » Mon Aug 13, 2018 6:43 am

jliat wrote:
Mon Aug 13, 2018 5:57 am
Ah - so all those 'eating a standard western diet ' are just getting stupider? You've noticed this, all around you... everywhere... interesting... :chin:
Food for thought – diet does boost your intelligence

Children brought up on healthy diets are more intelligent compared with their junk food eating counterparts, new research suggests.

Food for thought – diet does boost your intelligence
Parents were quizzed about the types and frequency of the food and drink their children consumed when they were three, four, seven and eight and a half years old.
Toddlers fed a diet packed high in fats, sugars, and processed foods had lower IQs than those fed pasta, salads and fruit, it was found.

The effect is so great that researchers from the University of Bristol said those children with a "healthier" diet may get an IQ boost.

Scientists stressed good diet was vital in a child's early life as the brain grows at its fastest rate during the first three years of life.

This indicated head growth at this time is linked to intellectual ability and "it is possible that good nutrition during this period may encourage optimal brain growth".

Scientists tracked the long term health and wellbeing of around 14,000 children born in 1991 and 1992 as part of the West Country's Avon Longitudinal Study of Parents and Children (ALSPAC).

Parents were quizzed about the types and frequency of the food and drink their children consumed when they were three, four, seven and eight and a half years old.

They were marked on a sliding scale which ranged from minus two for the most healthy to 10 for the most unhealthy.

IQ was measured using a validated test – the Wechsler Intelligence Scale for Children – of 4,000 children when they were eight and half years old.

The results found after taking account of potentially influential factors, a predominantly processed food diet at the age of three was associated with a lower IQ at the age of eight and a half, irrespective of whether the diet improved after that age.

Every 1 point increase in dietary pattern score was associated with a 1.67 fall in IQ.

On the other hand, a healthy diet was associated with a higher IQ at the age of 8.5, with every one point increase in dietary pattern linked to a 1.2 increase in IQ. Dietary patterns between the ages of four and seven had no impact on IQ.

Although a modest increase, the scientists said the study's findings were in line with previous ALSPAC research that linked early childhood diet and later behaviour and school performance.

Dr Kate Northstone said: "This suggests that any cognitive and behavioural effects relating to eating habits in early childhood may well persist into later childhood, despite any subsequent changes – including improvements – to dietary intake.

She noted the brain grows at its fastest rate during the first three years of life – indicating that head growth at this time is linked to intellectual ability.

She added: "It is possible that good nutrition during this period may encourage optimal brain growth."
Scientists learn how what you eat affects your brain — and those of your kids

In addition to helping protect us from heart disease and cancer, a balanced diet and regular exercise can also protect the brain and ward off mental disorders.

“Food is like a pharmaceutical compound that affects the brain,” said Fernando Gómez-Pinilla, a UCLA professor of neurosurgery and physiological science who has spent years studying the effects of food, exercise and sleep on the brain. “Diet, exercise and sleep have the potential to alter our brain health and mental function. This raises the exciting possibility that changes in diet are a viable strategy for enhancing cognitive abilities, protecting the brain from damage and counteracting the effects of aging.”

Gómez-Pinilla analyzed more than 160 studies about food’s effect on the brain; the results of his analysis appear in the July issue of the journal Nature Reviews Neuroscience and are available online at www.nature.com/nrn/journal/v9/n7/abs/nrn2421.html.

Omega-3 fatty acids — found in salmon, walnuts and kiwi fruit — provide many benefits, including improving learning and memory and helping to fight against such mental disorders as depression and mood disorders, schizophrenia, and dementia, said Gómez-Pinilla, a member of UCLA’s Brain Research Institute and Brain Injury Research Center.

Synapses in the brain connect neurons and provide critical functions; much learning and memory occurs at the synapses, Gómez-Pinilla said.

“Omega-3 fatty acids support synaptic plasticity and seem to positively affect the expression of several molecules related to learning and memory that are found on synapses,” Gómez-Pinilla said. “Omega-3 fatty acids are essential for normal brain function.

“Dietary deficiency of omega-3 fatty acids in humans has been associated with increased risk of several mental disorders, including attention-deficit disorder, dyslexia, dementia, depression, bipolar disorder and schizophrenia,” he said. “A deficiency of omega-3 fatty acids in rodents results in impaired learning and memory.”

killing raven sun
Posts: 1032
Joined: Wed Jun 13, 2018 2:01 pm

Re: superluminal

Post by killing raven sun » Mon Aug 13, 2018 7:03 am

Elsevier
Intelligence
Volume 36, Issue 2, March–April 2008, Pages 112-120
Intelligence

The decline of the world's IQ


Abstract

Dysgenic fertility means that there is a negative correlation between intelligence and number of children. Its presence during the last century has been demonstrated in several countries. We show here that there is dysgenic fertility in the world population quantified by a correlation of − 0.73 between IQ and fertility across nations. It is estimated that the effect of this has been a decline in the world's genotypic IQ of 0.86 IQ points for the years 1950–2000. A further decline of 1.28 IQ points in the world's genotypic IQ is projected for the years 2000–2050. In the period 1950–2000 this decline has been compensated for by a rise in phenotypic intelligence known as the Flynn Effect, but recent studies in four economically developed countries have found that this has now ceased or gone into reverse. It seems probable that this “negative Flynn Effect” will spread to economically developing countries and the whole world will move into a period of declining genotypic and phenotypic intelligence. It is possible that “the new eugenics” of biotechnology may evolve to counteract dysgenic fertility.

Post Reply

Who is online

Users browsing this forum: No registered users and 12 guests