Wikipedia:Reference desk/Archives/Science/2023 September 19

= September 19 =

Are any snakes primarily vegetarian?
—Tamfang (talk) 16:21, 19 September 2023 (UTC)
 * Well the one in the Garden of Eden claimed that the apples tasted good. ;-) Martin of Sheffield (talk) 16:39, 19 September 2023 (UTC)

Apparently, nope. One of first Google search hits for 'vegetarian snakes' says: "Keep in mind that all snakes are carnivores and cannot survive as vegetarians. Fortunately, there are a few snakes who can survive solely on invertebrates, but that still does not make them truly vegetarian reptiles." CiaPan (talk) 16:51, 19 September 2023 (UTC)


 * In reptiles, I also recall, no turtles or alligators are vegetarians, but there are types of lizards that are vegetarian (but eat wasps). I'll look into for frogs. 170.76.231.162 (talk) 16:55, 19 September 2023 (UTC).
 * Turtles are omnivores. ←Baseball Bugs What's up, Doc? carrots→ 22:05, 19 September 2023 (UTC)
 * Tortoise s are a type of turtle (scientifically speaking, and in American English), and they're herbivorous. Iapetus (talk) 09:21, 20 September 2023 (UTC)

Also, WHAAOE: "Snakes are elongated, limbless, reptiles of the suborder Serpentes" CiaPan (talk) 16:56, 19 September 2023 (UTC)


 * Tofu rabbits and Beyond cattle sigh in relief. Clarityfiend (talk) 03:46, 20 September 2023 (UTC)

Train magnets through a solenoid.
If I pass a series of magnets, magnetic poles aligned in the same direction, equidistant and at the same constant speed through a solenoid, do I obtain an electric wave in this solenoid according to the Lens-Faraday law and if yes, in what form? Malypaet (talk) 20:44, 19 September 2023 (UTC)


 * Michael Faraday demonstrated transient currents when he quickly slid a bar magnet in and out of a coil of wires, see Faraday's law of induction. This phenomenon of Electromagnetic induction was described mathematically by Maxwell as Faraday's law of induction. Lenz's law describes the direction of the induced current. In the experiment that Malypaet describes an e.m.f. will arise between the terminals of the solenoid, it will pulsate in alternate directions as the flux from each magnet passing through the wires grows and decays. The magnets should be held apart because there will be very little stray flux if they are allowed to attract together in contact. If a load such as a resistor is connected between the solenoid terminals an alternating current will flow. If that is the case then Lenz's law states that:
 * "The current induced in a circuit due to a change in a magnetic field is directed to oppose the change in flux and to exert a mechanical force which opposes the motion."
 * This means that work done moving the magnets against electromagnetic force is energy that goes to heating the load resistor. Philvoids (talk) 02:38, 20 September 2023 (UTC)


 * When a magnet enters the solenoid, a double voltage peak is generated: a positive peak, directly followed by a negative peak (or negative followed by positive, depending on the orientation of your magnets, solenoid and voltmeter). When a magnet leaves the solenoid, another double voltage peak is generated, but now reversed. With multiple magnets, you can add those peaks together with the appropriate time difference. Depending on the length of the solenoid and the separation between the magnets, that could lead to a clean sine wave, a wave with strong harmonics or no signal at all (if one magnet enters precisely when another leaves). PiusImpavidus (talk) 08:50, 20 September 2023 (UTC)

RESCUE REQUEST
(Excuse-me, I’m autistic, I requested my father to help me write, so there are two versions of the message.) ======================================================================= 🆘 I CAN'T STAND IT ANYMORE, cryonics is said to be too neuron-destroying for the technologies of the future to do anything. I did come up with a process to do something for all these people, but given the previous recital, we need to focus on preserving neurons in good conditions. I need a process (cold or otherwise) that works. Could you please send a message "Extreme urgency: current Cryonics destroy too many neurons and vitrixation does not preserve the excitability threshold of synapses and is said to destroy neurons too, could you please immediately launch research into finding a satisfactory process" to the authorities, public services and non-profit organisations.

What we are going to do is, instead of using classic cryonics followed by dismantling of the brain into individually excited neurons by computer (thanks to a computer simulation (based on the data collected during dismantling)) - to do this we would also have to dismantle each neuron into each of its parts in order to recover information about (among other things) the excitability threshold of the synapses - use vitrifixation with preservation of the excitability threshold of the synapses and with non-destruction of the synapses and neurons (a process yet to be invented); This will allow us, thanks to the downloading of data from the mind, to simply dismantle the brain by removing the neurons one by one without having to dismantle them themselves, which makes this operation much easier.

=====================================================================

I'm interested in brain preservation after death.

What advances have been made in this field?

Which companies or research laboratories are competent in this field and/or are currently working on it?

Where can I find reliable sources of information in this field? 2A01:CB0C:C45:E000:CF09:1E0:E6F:9128 (talk) 21:25, 19 September 2023 (UTC)
 * Have you read our article on "Cryonics"? Also look at Brain in a vat, Mind uploading, Connectome. The state of the art is reflected in the Drosophila connectome. Many reliable references are linked from the articles. Graeme Bartlett (talk) 23:48, 19 September 2023 (UTC)


 * Given the research in this field, I would abandon it and move on to other topics, such as how to alleviate suffering and improve life for the living. Many billionaires aren't going to like this idea, since they are hoping to live forever. I can say with some certainty that they won’t. It is my opinion, that most people get obsessed with this idea because they are afraid of their own death, and the popularity of this topic in the public arena attracts a great deal of attention because it's an idea that is either impossible or so far in the future, grifters and conmen can make a great deal of money selling the idea. More interesting is the Ship of Theseus problem of identity.  The idea that you are your brain is popular and given as true, but the reality is that you as an identity are much more than just your brain, you are also your body and its interaction with the world around you (family, friends, peers, nature, etc.)  Life, and by extension you, has limits, and that's where meaning and purpose reside.  The more people age, the greater they become out of touch with the world they arose from.  If you were to preserve the brain of someone after death, it wouldn't be much use.  I suppose you could extract memories and experiences, and there's great fiction that explores this idea.  The four-part Cold Lazarus series takes this idea to its absurd conclusion, as does Westworld.  I'm afraid there aren't many upsides to brain preservation.  The world as we know it benefits from the daily injection of the new and the different; that's how change and progress arise.  Brain preservation would simply establish an institutionalized form of regression and paleoconservatism, and would hold back and prevent the young from altering the world as they see fit. Viriditas (talk) 22:30, 22 September 2023 (UTC)
 * Could we all the same start the paperwork for a march in Washington DC in support of my last paragraph of strategy (the second), please? 2A01:CB0C:38C:9F00:49AF:5F12:F46B:CD44 (talk) 17:55, 23 September 2023 (UTC)