-
Posts
9914 -
Joined
-
Last visited
-
Days Won
132
Content Type
Profiles
Forums
Events
Everything posted by MigL
-
Unobserved measurement, eigenvalues, and entanglement.
MigL replied to AbstractDreamer's topic in Quantum Theory
As Swansont explains, your HR monitor had to be in one of three possible places, eliminating the two possibilities, leaves the third option as the only possibility. Entanglement has the same 'correlation'; Of the two possible spin directions, measuring the state of one, tells you the state of the other must be in. Some people make the argument that, since neither state is known before the first measurement, some 'information has to be 'sent' to fix the second measurement, bringing all sorts of complications. But I'm a simple guy who doesn't like complications. ( only complicated women ) As for circumventing the HUP, if you had known the momentum of your HR monitor before you lost it, you would have needed to know its position on that third running path such that the product of its momentum standard deviation, and position along the path standard deviation is greater/equal to hbar/2. IOW for large macroscopic objects, almost exact. -
So you would not have a problem with eugenics, if it was on a personal level ? Say families decided to abort handicapped foetus, or females; Or decided to have low IQ children sterilized, etc ? As long as it wasn't state sponsored ? ( I have my personal reasons for the difference, and it is a tenet I've mentioned before on the forum; I would just like to hear others' take on the matter )
-
I didn't open the door to this old thread, but now that it's open, I'm gonna walk in, and try to get a good discussion going... Eugenics, 'removing', and preventing, undesirables from being born, is bad. Even though it could improve society, and make life better for those remaining. Abortion, removing foetus, and preventing children from being born, is good. Because unwanted children are detrimental to society, and preventing childbirth is better for the parents. I'm not saying either is bad or good, but I would like to hear the logic of those who think there is a huge difference between the two.
-
Corona virus general questions mega thread
MigL replied to FishandChips's topic in Microbiology and Immunology
Having had Kawasaki does not put you at higher risk. But this affliction, very similar to Kawasaki, has been linked ( in UK, Italy and US ) to Covid-19 -
A number line is endless, yet does not repeat itself. Why do you think living beings would ?
-
Corona virus general questions mega thread
MigL replied to FishandChips's topic in Microbiology and Immunology
It may act as a systemic inflammatory agent. Other than the respiratory tract, GI tract and kidneys, it also seems to inflame blood vessels, leading to a thickening ( gelling ? ) of blood. There is also the systemic inflammation that has been affecting children, and linked to Covid-19. -
As it is, by definition, a very subjective topic, I can only speak about my views on the matter. I recognize, and respect, that others' views will differ from mine.
-
Interesting premise, but it doesn't seem to hold under closer scrutiny. In addition to what Strange mentioned ( the death of stars producing the heavy elements needed for life and planets ), stellar 'explosions' also cause the 'shock waves' in interstellar gas that spurs new star formation. Or would you argue that is a 'little' effect leading to a 'bigger' one ? But I suppose the largest effect, the vacuum energy of the whole universe, being responsible for the vacuum fluctuations at the beginning of your small to big' sequence, should be considered also. This non-zero vacuum energy also contributes, through the Cosmological Constant, to the expansion of the universe, and the voids/clusters of large scale structure, which, through gravitational binding, contribute to structure at smaller and smaller scales; even concentrations of gas/dust for galactic > stellar > planetary formation. Highly dependent on viewpoint, I suppose...
-
Do you know what geostationary implies ? It is a circular orbit, at a specific height and rotational speed, such that the orbit is completed in one day and the satellite keeps station above a specific location. The orbital velocity/height is then where the centripetal force is equal to the gravitational force. You should be able to set the two equal to each other and solve for v and r variables ( since you know the period ). I have no idea what the first and second 'cosmic' velocities are. ( maybe another member can help with that ) Edit: On further consideration, you may have to use a 'sidereal' day for the period of the orbit. And, of course, the orbit has to be in the same direction as Earth rotation.
-
Uummm… You think you've been drinking for only an hour, but actually, it's been 4 hours. Then you stumble.
-
We have a lot of deaths in nursing homes in Canada also. Maybe it has to do with compromised immunity, not location. Politicians also send people to war, and many die. Again, what point are you trying to make ?
-
Funny how people say we don't need social distancing/special precautions because Covid-19 is not that virulent. When the reason for it not being 'so virulent', like the Spanish flu was, is exactly because of the efforts being put into social distancing and special precautions.
-
I get slightly over 34 000 from the CDC... https://www.cdc.gov/flu/about/burden/2018-2019.html "CDC estimates that the burden of illness during the 2018–2019 season included an estimated 35.5 million people getting sick with influenza, 16.5 million people going to a health care provider for their illness, 490,600 hospitalizations, and 34,200 deaths from influenza." Are you sure you don't mean another year ?
-
Over 300 000 people, all over the world also had Covid-19. They died. Much worse than the common cold. What point were you trying to make ?
-
Thanks INow. My searches never give me results. ( lucky I'm not senile yet, and still have good memory )
-
Well, there goes the invariance of c .
-
We had a very informative thread a few years ago, concerning the existence ( or lack of ) of proof that Jesus existed.
-
That would lead to a lot of Marilyn Monroe, skirt blown up around the waist, type incidents. Is this thread becoming a little silly ?
-
All observers also agree on the invariance of c ; something has to change. Frequency, or wavelength, of the signal. Hence, red or blue shift. That was simple, wasn't it ?
-
There is no proof that he actually existed. ( only hearsay, after hundreds of years ) To a scientist that makes a difference, to a Religious person, it doesn't ( and it shouldn't ). See the difference ?
-
How do you know it ticks more slowly until you bring them together to compare ? Frequency and wavelength are a 'signal', and are used as 'timing', or a clock, if you will.
-
Wasn't aware of the Klein paradox. Wiki mentions it was a problem with the Rutherford atom's neutral nuclear particles ( electron-proton confinement before the discovery of the neutron ). I got the electron confinement, to a diminishing size box, from S Chandrashekar's treatment of maximum size of white dwarf stars, and collapse to neutron stars, which he wrote on the ship voyage to England, to do his graduate study under A Eddington.
-
Gravitational time dilation is relative. It is only apparent when comparing the emission ( frequency/wavelength ) from two differing depths of the Gravitational potential well. IOW, one 'signal' has to climb/descend to the height/depth of the other for the comparison to be made. You cannot circumvent that ( no mixed frames ).
-
Sure. But my statement is now true. ( also re-read the first part of my original post, about me being lazy )