Jump to content

Endy0816

Senior Members
  • Content Count

    3178
  • Joined

  • Last visited

  • Days Won

    1

Posts posted by Endy0816


  1. 2 hours ago, CuriosOne said:

    what's the capitol x for?

    about ^2 makes sense, ...

    undoublty "then" its ratio, length and time based all wrapped up in a nice tiny box of x...lol

    Ok, lots of questions here...if you may..

    The counting base 10 system is the only one I understood so far...I will work on the others..

    For the 60 and minute question.

    Is that 5 in 5*12 base 5?? Or is it some "form" of square root "base system" for 25*4 = 10^2 100 cm for the base 12 system...Maybe I should just open a new thread, but this is on topic..

    Just to let you know I get this idea from 100 cm in one "meter second" the SI unit for the second, but from real time, not the speed of light...

    5 in base ten. Always assume base ten until told otherwise or if it is obvious in context(dealing with base-16 hexadecimal codes with letters as numerals for example).

    This is only alongside numbers, but you would normally use subscript to identify the base being used(if it needs to be made obvious). The number indicating the base, should itself be in base ten to avoid confusion.

    ie. 5 in base ten = 510

     

    An old joke goes that there are 10 kinds of people in this world, those that understand binary and those that don't.

    The joke being that 'one-zero' in binary or 102, actually means just two in base ten.

     

    You already understand counting in different bases, you just have to adjust your thought process slightly to see that.

    If I say 90 minutes from 3 AM, your brain will automatically add the two correctly and give you the correct time, without you even noticing it.


  2. 1 hour ago, Bufofrog said:

    Endy018 was trying to show you how to count to give in different bases.  In base 10 there are 10 single digits (if you include 0) and no single digit for 10.

    So to count to 5 in base 10 you can count 1, 2, 3, 4, 5.

    In base 5 there are 5 single digits (if you include 0) and no single digit for 5.

    So to count to 5 in base 5 you can count 1, 2, 3, 4, 10.

    In base 2 there are 2 single digits (if you include 0) and no single digit for 2.

    So to count to 5 in base 2 you can count 1, 10, 11, 100, 101.

    ^This.

    For lower values, I'll also normally say the individual digits to make differentiating easier.

    ie. One(1), One-Zero(2), One-One(3), One-Zero-Zero(4), One-Zero-One(5)

     

    1 hour ago, CuriosOne said:

    But what base does algebrea use?

    I ask becuase it has a 2 above the x:

    x^2

     

    You assume base 10 unless otherwise indicated.

     

    For x^2 that '2' just indicates that you are multiplying it by itself that many times.

    x^2 = x multiplied by x twice = x raised to the power of 2 = x squared

     

    1 hour ago, CuriosOne said:

     0 9 8 7 6 5 4 3 2 1 is understood, but when we add these to "units" from derived math formulas is where I get confused, very confused and "one of the reasons is: You cannot have 60 seconds in one "completed cycle" ie time doesn't say 1:60 pm, it says 2:00 pm

    So what happens when we apply your explanation to time? Do we have 0->59 charectors of time?? 

    I think were not including the most fundamental part of numbers and nature..

    Time is a mixed base system based on the bases 12 and 60(12*5).

    image.jpeg.c8142343ad7bf6f31d4eb3d6fe10fb05.jpeg
    Originally based on counting each of the 12 colored areas above and everytime you reach twelve lowering one finger of the other hand.
     

     


  3. 2 hours ago, CuriosOne said:

    Did Issac Newton know about numeral systems? IE Bases 10, 2, 1 etc etc? 

    If not then, why do we use them "in calculus today??" 

    Moreover, how can computers compute calculus? Issac Newton didn't have one, or did he?? Was it a Macintosh??  seriously..

    This should be a very interesting thread..

    We've used a variety of bases as a species historically. Base 20, base 8, base 12. Just depended how people wanted to count on their fingers and toes. Newton would have been familiar with the concept.

    Logarithms are used in the change-of-base formula. Not strictly necessary to figure it out though. You could always just count or work it out in your head.

    Computers do math the same as you and I might.  Newton probably used an Abacus though(which more or less involve some of that converting themselves).


  4. 5 hours ago, Sanitarium said:

    I don't know what to believe it or not. What the hell is this all about? 

     

    https://www.theguardian.com/commentisfree/2020/sep/08/robot-wrote-this-article-gpt-3

     

    A program producing original content based on existing content.

    AI Dungeon(on-the-fly adventure generator)is a good way to see this in action have fun with it.

    https://aidungeon.io/play-ai-dungeon/

     

    Going to be real crazy as coherency improves and video becomes more practical.


  5. 17 minutes ago, doctorstrange said:

    It is how to understand dark matter when you reach light speed.

     

    ...warp speed is shown with no weight when you reach the speed limit

    You need to explain better.

    It is impossible to reach lightspeed.


  6. 4 hours ago, Eli said:

    Hi

    Sorry in advanced for for my english. Recently im hearing scientific podcasts while jogging. One of them overwhelmed me with two claims that i just must vetify in order to sleep well. A genetics researcher claimed:

    1. almost all creatures on earth that mutate with eggs can do it either by the preferred way with fertilizing the egg using the male, or cloning the mother without fertilizing if no male is around. For example an unfertilized chicken egg under special treatment (incubator?) can clone the mother chicken

    2. mamal's male is transferring knowledge to its y genes with accordance to his life experience. For example, male mice were punished after smelling vanila so their "kids" will run away whenever they smell vanila eventhough they were'nt punished just their father

    thanks

    Parthenogenesis can occur, but to my knowledge it is still very atypical in chickens. Most would fail to develop.

    For some species however parthenogenesis is the only way they reproduce.

    Note that this is different from cloning where the existing genetic material is removed with new genetic material inserted.

     

    In your second case, likely only the code that eventually leads to the smell receptors is being modified.  If some smell is repulsive to the offspring they will naturally flee. 


  7. 3 hours ago, John Cuthber said:

    There's no earthly reason why they would leave if they don't want to.
    Our govt has a massive majority. We are stuck with the Tories for years. And it's hardly as if any of them is any better than Boris or Priti.

     

    I'm thinking new faces alone would help reset UK's international relations, even if they are otherwise unremarkable. Hoping Boris ends up as their next sacrificial PM when things go sideways and Priti goes with.

    Imagine Boris vs anyone else asking for Biden's help on something like undoing the Scotch tariff, for example.

     


  8. 2 hours ago, meehow said:

    Hi
    I have an air filtering questions.
    Due to a heavy pollution caused by neighbors burning plastics, polystyrene and rubber the air inside the house is not breathable.
    Long story short: this problem is ongoing and will not stop.
    I purchased the WINIX ZERO Air Purifier with 4 Stage Filtration
    It consists of 1. fine mesh 2.hepa filter 3.carbon fibre filter 4.Plasma Wave technology, which creates Hydroxyls.
    The device helps but is not efficient / not quick enough at removing the harmful smoke.
    I can't afford an industrial filtration system of higher efficiency.

    DIY is an option.

    I plan on 3 stages: hepa, activated carbon granules chamber, water.
    For this, I will use a system of air ducts, fans, air pumps, large water tank.
    No more opening windows.
    Air will be collected from outside and entirely filtered before releasing into the house.
    Requirement is ~20 liters of filtered air per minute to provide enough breathable air for 2 personas and 4 cats :-).

    The question is:
    In what order should I install the stages?
    I am thinking: water first to trap most solid particles (so it prolongs hepa life), then hepa to trap remains, finally carbon to trap VOCS.
    Please advice.
    Any other ideas?

    Yeah that sounds like it should work , noting you'd want to  make sure the smoke from regenerating the activated carbon goes outside.

    Are there any laws  that could be enforced regarding the burning of trash?


  9. 1 hour ago, J.C.MacSwell said:

    Agree with Puerto Rico, but surely you aren't suggesting Statehood for American Samoa (better treatment and some provision for voting rights aside)?

    Would personally favor establishing a new official Microstate category(they can vote to become), still with representation, unless interested in joining with other Pacific Territories.

    D.C. would be similarly problematic as a State with its own unique issues.


  10. 3 hours ago, Erina said:

    I found an American study online which shows the following :

    "The FL, traditionally used in growth rooms, led to higher growth rates and deposition of S and G lignins, greater cellulose content, and higher expression of cellulose-synthase 4 (BbCESA4) and cellulose-synthase 7 (BdCESA7) genes."

    ref: https://pubag.nal.usda.gov/catalog/5909483

    Only thing is they have to use sugar to make cellulose. Has to be some kind of tradeoff going on.


  11. 18 hours ago, iNow said:

    You’re clearly a better man than I. 

    I tend to agree. American Samoa comes to mind, too 

    Think I've just lived too long seeing the problems territory status causes for everyone. With representation they could receive the effective investment they need and more broadly better recognition for Latin Americans in general.

    Whole of the Caribbean could be turned into a major growth region on our doorstep with only a smidge of effort.

    ...and yeah American Samoa is another one...  I shake my head at the insanity of what amounts to decades long inaction.


  12. 1 hour ago, iNow said:

    First step in a long process. Puerto Rico basically agreed to petition congress to consider admitting them as the 51st state. Now congress has to actually do something with it and president needs to sign. House will be on board. President Biden will be on board. GOP led senate will block it. A good step though 

    I remain hopeful Republicans might someday realize many Puerto Ricans are socially conservative.

    Would love if we could end up having no Territories in the whole country.


  13. 15 hours ago, Erina said:

    It's a mixture of the two, Wikipedia lists oxygen as a main catalyst requirement for growth, but in the sun had me worried.

    Do you know if an artificial light source such as LED light would have a similarly positive effect, and if there is a wavelength of which would not damage the bacteria, but still allow growth ?

    I don't know of any lighting used in industrial vinegar production. Might still make for some interesting experiments  if you want to give it a shot.


  14. 23 hours ago, John Cuthber said:

    Well... was it very expensive?

    Could you anneal some and find out if that makes a difference?

    The piece I have was twenty dollars, but could probably find it cheaper buying in bulk and use less of it.

    Not sure what I can achieve in the way of temperatures, but I'll give that a try for a piece.

     

    11 hours ago, Bufofrog said:

    Is the metal still ductile or is it brittle, since there are no crystal grains?

    I'd say brittle. Really noticeable where it has been cut or is tearing. Half wondering if it can be shattered.


  15. 7 hours ago, John Cuthber said:

    I listened to a strip of metal. It wasn't noisy.

     

    Would you like to rephrase your question with less emphasis on the assumption that we can read minds?

     Hard to describe exactly but if you hold it in your hand and give it a quick shake, noise results. Was wondering if it might have some use as a noise maker.

    Made a quick video.

     

     

     

     


  16. 18 minutes ago, MigL said:

    There are two types of fluid flows in aero/hydrodynamics, compressible and incompressible.
    They can both be modelled by little springs between each fluid particle; when you push against one particle, it pushes against the next via the little interconnecting springs, and the fluid, in effect, compresses.
    If you push too fast, the little springs reach maximum compression, and the particles begin to 'pile up' into a bow wave.
    For air, this happens at Mach 1, and the air effectively becomes incompressible.

    Water is nearly incompressible from the get-go ( also, liquids and solids have transverse 'sound' waves as well as longitudinal ). That's why you see a bow wave on a boat doing 10 mph. That wave is the 'shock' of the particles bunching up because they can't move out of the way fast enough.
    Another ( huge ) problem would be cavitation. This is usually seen in pumps/propellers where the fluid can't flow fast enough into the area behind the pump/propeller blades, creating a low pressure area ( or even vacuum ) which tends to destroy equipment.
    For a plane the shock is the separation where supersonic air is drastically decelerated to subsonic ( inside the shock cone ), and it carries a lot of momentum/energy which is dissipated in the 'sonic boom'.
    If the 'sub' was at a shallow depth, with the surface close by, the spray pattern of the water shock into the air would be extremely interesting. to say the least.

    So the shock wave of travelling through water would be no different than through an incompressible fluid such as supersonic air, except for the cavitation problem, which I didn't consider on Sunday ( and which may make this idea a non-starter ).
     

    Be noisy if nothing else.  Maybe if the water was kept  away from the hull itself though you could avoid the worst of it.

    In theory if we forego keeping the interior at atmospheric pressure could streamline the hull. If crewed, atmospheric composition and depth changing would have to be taken into consideration though.

×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.