-
Posts
13433 -
Joined
-
Last visited
-
Days Won
96
Content Type
Profiles
Forums
Events
Everything posted by StringJunky
-
Theoretically, could the universe have a center?
StringJunky replied to Sandro's topic in Astronomy and Cosmology
This is where you have got it wrong; The universe isn't in anywhere, so it can't have an origin; it is everything that exists. -
Theoretically, could the universe have a center?
StringJunky replied to Sandro's topic in Astronomy and Cosmology
Only the observable universe is spherical and a discrete space with a centre. The geometry or shape of the wider universe could be one of a few candidates, like a torus, for example; there is no centre. Visualise the surface of a sphere and you will see there is no centre and as it expands each adjacent point on that surface moves further apart -
At 50% sugar you are nearly into jam making territory which works as preservative by moving the water out of the bacterial cells osmotically* and dehydrating them. The maximum concentration needs to be lower than the concentration found within the cells to avoid dehydration. From this source , under the chapter called Sugar, a sugar-tolerant strain of acidophillic bacteria can multiply in a 15% sugar concentration. Probably, 10% would be a better starting point as you won't know if they are sugar-tolerant strains in your sample. *Osmosis - the water will move across a membrane from a low sugar ( or other solute e.g salt)/high water concentration to a high sugar/low water concentration, leading to dessication.
-
Do you believe the death penalty is unethical?
StringJunky replied to Lyudmilascience's topic in Ethics
The latest part of this discussion has been whether ethics can be determined objectively and Zapatos and I think not. -
Interface theory of perception
StringJunky replied to Buket's topic in Anatomy, Physiology and Neuroscience
Not in the area of physics he isn't. He's only presented musings - not practical research with evidence - on a subject that is not in his area of expertise. -
What, you mean you're not telepathic?! It''s probably linked to a deficiency in empathy; some have more than others.
-
Do you believe the death penalty is unethical?
StringJunky replied to Lyudmilascience's topic in Ethics
You are not getting the point. I'm talking about what people believe is ethical within a particular age or society, Wring your hands and cry "Hail, Mary!" all you like but it doesn't change anything - things are/were as they were/are. If you want to think you have loftier ethics then fine but it doesn't matter. There are some subjects, like this one, that many people lose their objectivity and their emotions come to the fore as though they feel the need to defend a position when it's not even under scrutiny. -
It may be approved but you aren't receiving properly assayed medicine; it could be any purity and anything. A neuropathy is too serious to contemplate self-medicating.
-
Like anything, If it works for you, that's all that matters. I was probably not in a good mood when I wrote my last comment.
-
Interface theory of perception
StringJunky replied to Buket's topic in Anatomy, Physiology and Neuroscience
We can never know reality as it is but the closest we can get to it is with the scientific method and it's the people that use it to explore this subject are the ones you should be looking at. -
Do you believe the death penalty is unethical?
StringJunky replied to Lyudmilascience's topic in Ethics
No. Ethics is whatever the prevailing societal consensus is, whether it accords with our own view or not. Good ethics could mean that any baby born with green eyes will be killed because "they are inherently evil and the spawn of the devil and, therefore, must not contaminate the gene pool"; it would be morally justified in such a society because it is consistent with that belief system. -
Alternative analogies for the curvature of Space-Time
StringJunky replied to geordief's topic in Relativity
Right. Thanks. Rather than changing the analogy, people need to understand what they are, learn the limits of them and which area(s) the analogy is describing. People often take them too literally and changing it won't make any difference imo. -
Interface theory of perception
StringJunky replied to Buket's topic in Anatomy, Physiology and Neuroscience
I don't disagree but I was responding to Buket's thoughts directly rather than Hoffman's. I think we agree his ideas are suspect. -
New medical invention
StringJunky replied to Ryanpaasch5's topic in Biochemistry and Molecular Biology
Good thought but what's different chemically about skin that has a vein under it and an area that doesn't? I've had a lot of blood tests from different phlebotomists and the good ones - that don't hurt - tell me it's an art more than a science. It's all about feel. -
Alternative analogies for the curvature of Space-Time
StringJunky replied to geordief's topic in Relativity
Isn't the degree of curvature a function of the energy-density that causes it? I always thought that spacetime curvature was an abstract mathematical construct that generated a curved graphical distribution of the gravitational field; not literally curved space but values that created mathematical curves graphically. -
Can a user's account be deleted?
StringJunky replied to Tampitump's topic in Suggestions, Comments and Support
Won't work. You can select "Forgot password". You'd need to close the associated email address as well. -
Interface theory of perception
StringJunky replied to Buket's topic in Anatomy, Physiology and Neuroscience
You would have, for example, the perception that the lion is BIG which creates fear. You are looking at it the wrong way. It's not about seeing something as something completely different, it's about perceiving some details being more prominent, or diminished, to your perception than others, which may be different to another organism or sensory system; which one would be the true mirror? -
Interface theory of perception
StringJunky replied to Buket's topic in Anatomy, Physiology and Neuroscience
I think the model that our brain builds is the one that has allowed our species to evolve to its current state and kept us alive. This means, to me, that it doesn't follow that it is a true reflection of the world around us; our brain prioritises the parts we see and evaluate to maximise our chances of fulfilling our needs. I agree with your assessment of Hoffman: he is miles away from his expertise with the stuff he is writing about. -
Yeah, I've read there is non-smelly neutral cure but I don't know if it's any better for my purpose.
-
The intended application is to mix it with white spirit to make waterproofing solution. I bought some Diall clear GP silicone sealant - mixed it at the rate of 5g sealant to 50ml white spirit - and it waterproofed a garment fine until it was washed in non-biological washing powder at 30C. I know the commercial waterproofers allow washing up to 3 times before re-application is required. With the stuff washing out first time I'm wondering if there is a more resistant silicone I can use suitable for this purpose. This is just an experiment to see if I can make a useful fabric waterproofer cheaper than the commercial stuff..
-
New medical invention
StringJunky replied to Ryanpaasch5's topic in Biochemistry and Molecular Biology
When you don't know the ropes it doesn't seem odd to ask where ones target audience, that might know something, may possibly hang out and give advice. It seems a reasonable first step.