Wikipedia:Reference desk/Archives/Science/May 2017

= May 1 = Reference_desk/Archives/Science/2017 May 1


 * 1) Are humans diverse enough to have immunity towards all diseases?
 * 2) Technology for launching satellites vs for ballistic missiles
 * 3) What was the highest text and/or number information density when the "first computer" and film were invented?

= May 2 = Reference_desk/Archives/Science/2017 May 2


 * 1) Squirrel ID
 * 2) What does it mean "cold sweat"?
 * 3) Antimicrobial properties of copper

= May 3 = Reference_desk/Archives/Science/2017 May 3


 * 1) What's the smallest feature of 14 and 10nm chips in the horizontal direction?
 * 2) Nicotine parent
 * 3) What is the reason to remove jewlarys in case of burn?
 * 4) Temperature change of air due to pressure drop
 * 5) Blood compatibility in pregnancy
 * 6) Would it make more sense for gas stations to sell by the pound or kilo?
 * 7) Tubeless bike tires with holes instead
 * 8) Height of Parinacota?

= May 4 = Reference_desk/Archives/Science/2017 May 4


 * 1) Second law of thermodynamics
 * 2) What do you get when divide time by distance?
 * 3) How much force to increase pressure?
 * 4) What has five leaves?
 * 5) Is dark energy ever considered to be "walls of the cosmos"? A few questions, mostly theoretical

= May 5 = Reference_desk/Archives/Science/2017 May 5


 * 1) Earth tidal heating
 * 2) Why we cannot see crescent of Venus

= May 6 = Reference_desk/Archives/Science/2017 May 6


 * 1) Acrylic Adhesive
 * 2) How can I swing
 * 3) Landlocked fish
 * 4) [[Wikipedia:Reference_desk/Archives/Science/2017 May 6#Feynman_Lectures._Exercises_.5Bhttp:.2F.2Fwebcache.googleusercontent.com.2Fsearch.3Fq.3Dcache:http:.2F.2Ftheswissbay.ch.2Fpdf.2FGentoomen.252520Library.2FExtra.2FRichard_Feynman-Feynman_Lectures_on_Physics.25252C_Vol._1_Exercises-1964._Volume_1-Addison-Wesley.281964.29.pdf_Google_OCR.5D._Exercise_1-5_.5Bhttp:.2F.2Fhtml.scribd.com.2F91cmvs8wn433jb9d.2Fimages.2F7-20c29f2e20.jpg_JPG.5D|Feynman Lectures. Exercises Google OCR. Exercise 1-5 JPG]]
 * 5) All-day use of CPAP Continuous positive airway pressure devices.
 * 6) What's the point of non-specialized scientific magazines?
 * 7) electric train whining noise
 * 8) Mass, acceleration, gravitational field, and electric field.
 * 9) Calories in Sucralose

= May 7 = Reference_desk/Archives/Science/2017 May 7


 * 1) Antidepressants
 * 2) Letters on a pill

= May 8 = Reference_desk/Archives/Science/2017 May 8


 * 1) Astronomy / Calendar : Thirteen Groups of (Almost) Eight
 * 2) Whom to trust?
 * 3) Magnetism
 * 4) Making sense out of North Korea's assassination plot suggestion
 * 5) Does the Milky Way rotate around anything?
 * 6) Blackest black fabric that is reasonable to achieve?
 * 7) Personality types.
 * 8) US energy efficiency drop
 * 9) Animals swallowing live prey

= May 9 = Reference_desk/Archives/Science/2017 May 9


 * 1) DIY teleprompter glass plate angle
 * 2) [[Wikipedia:Reference_desk/Archives/Science/2017 May 9#Feynman_Lectures._Exercises_.5Bhttp:.2F.2Ftheswissbay.ch.2Fpdf.2FGentoomen.2520Library.2FExtra.2FRichard_Feynman-Feynman_Lectures_on_Physics.252C_Vol._1_Exercises-1964._Volume_1-Addison-Wesley.281964.29.pdf_PDF.5D._Exercise_1-8_.5Bhttp:.2F.2Fhtml.scribd.com.2F91cmvs8wn433jb9d.2Fimages.2F7-20c29f2e20.jpg_JPG.5D|Feynman Lectures. Exercises PDF. Exercise 1-8 JPG]]
 * 3) Where's the highest railway? (above the surface, not sea level)

= May 10 = Reference_desk/Archives/Science/2017 May 10


 * 1) Several siblings, all male or female
 * 2) What does it mean "Negative logarithm" of the concentration of hydrogen ions.
 * 3) As more and more Hydrogen ions exist the more acidic it is?
 * 4) Thermodynamics of a permanent magnet
 * 5) Why do fat people have a lower pain threshold?
 * 6) Universe expansion

= May 11 = Reference_desk/Archives/Science/2017 May 11


 * 1) Psychology study about the perception of achievement
 * 2) Convection coefficient for Heat sink Calculation
 * 3) Elephants in a balanced ecosystem
 * 4) Why are combustion motors noisy?
 * 5) Could the US or Latin America have lots of wild elephants if someone had released breeding pairs?

= May 12 = Reference_desk/Archives/Science/2017 May 12


 * 1) Understanding the Wheels

= May 13 = Reference_desk/Archives/Science/2017 May 13


 * 1) Medicinal side effects
 * 2) Evolution of sexual selection in humans
 * 3) Lactose gene

= May 14 = Reference_desk/Archives/Science/2017 May 14


 * 1) Is Faraday's law of inductance properly applied to Wiki's article on LC circuits?
 * 2) Floating references
 * 3) ceramic capacitor vs tantalum capacitor
 * 4) Data and maths of man-made climate warming

= May 15 = Reference_desk/Archives/Science/2017 May 15


 * 1) Meaning of "above" in geology
 * 2) Induction and Convention of thermoelement
 * 3) Autopsies in the absence of a coroner's investigation
 * 4) [[Wikipedia:Reference_desk/Archives/Science/2017 May 15#Feynman_Lectures._Exercises_.5Bhttp:.2F.2Ftheswissbay.ch.2Fpdf.2FGentoomen.2520Library.2FExtra.2FRichard_Feynman-Feynman_Lectures_on_Physics.252C_Vol._1_Exercises-1964._Volume_1-Addison-Wesley.281964.29.pdf_PDF.5D._Exercise_4-2_.5Bhttp:.2F.2Fhtml.scribd.com.2F91cmvs8wn433jb9d.2Fimages.2F8-91f1a7c855.jpg_JPG.5D.5Bhttp:.2F.2Fhtml2-f.scribdassets.com.2F91cmvs8wn433jb9d.2Fpages.2F8-91f1a7c855.jsonp_..5D|Feynman Lectures. Exercises PDF. Exercise 4-2 JPG.]]
 * 5) If one eats fruits and veggies without washing them or cooking them, then what is the likelihood of dying by acute illnesses and plant toxicity?

= May 16 = Reference_desk/Archives/Science/2017 May 16


 * 1) Death by Medicine
 * 2) Skin-mole color relation
 * 3) Spiked bulletproof surface
 * 4) project engineering, project management, project management office, construction management, commercial management, design engineer
 * 5) Explosive Reactive Armour
 * 6) Understanding ammonia

= May 17 = Reference_desk/Archives/Science/2017 May 17


 * 1) WW2 bomb disposal
 * 2) Lathe coolant

= May 18 = Reference_desk/Archives/Science/2017 May 18


 * 1) End mill
 * 2) What happened in AHA guideline in 2015 regarding to the definition of children age?
 * 3) Homogenous packaged, pre-cooked food
 * 4) Do any wild/feral animals know what traffic lights or walk signals mean?
 * 5) condensed climate chart

= May 19 = Reference_desk/Archives/Science/2017 May 19


 * 1) [[Wikipedia:Reference_desk/Archives/Science/2017 May 19#Feynman_Lectures._Exercises_.5Bhttp:.2F.2Ftheswissbay.ch.2Fpdf.2FGentoomen.2520Library.2FExtra.2FRichard_Feynman-Feynman_Lectures_on_Physics.252C_Vol._1_Exercises-1964._Volume_1-Addison-Wesley.281964.29.pdf_PDF.5D._Exercise_4-4_.5Bhttp:.2F.2Fhtml.scribd.com.2F91cmvs8wn433jb9d.2Fimages.2F8-91f1a7c855.jpg_JPG1.5D.5Bhttp:.2F.2Fhtml.scribd.com.2F91cmvs8wn433jb9d.2Fimages.2F9-547346fc9a.jpg_JPG2.5D|Feynman Lectures. Exercises PDF. Exercise 4-4 JPG1JPG2]]
 * 2) Carpet bombing
 * 3) Physics Question about a clock meant to address time dilation
 * 4) Honey

= May 20 = Reference_desk/Archives/Science/2017 May 20


 * 1) Defibrillator paddles vs defibrillator pads/ patches
 * 2) Where are the amino-acids / steroids derivatives hormones are made in?
 * 3) Ladder paradox and electric circuit

= May 21 = Reference_desk/Archives/Science/2017 May 21


 * 1) What is the exact number of hormones in human?
 * 2) Heyday of immune system
 * 3) Power consumption of black and white screen
 * 4) Continuity equation for fluids

= May 22 = Reference_desk/Archives/Science/2017 May 22


 * 1) Brush for painting walls
 * 2) Eliminating infectious diseases by bioengineering large numbers of brainless humans with weakened immune systems?
 * 3) Why epinephrine is discriminated from nor-epinephrine and dopamine by the definition of hormone?
 * 4) Histamine is considered as hormone or not?
 * 5) How can gunpowder propel something over Mach 1?
 * 6) What kind of voltage regulator is this?

= May 23 = Reference_desk/Archives/Science/2017 May 23


 * 1) Chemistry - Chloro-amphetamine
 * 2) Sugar in baked beans
 * 3) Acidity and preservatives
 * 4) History of Allergy Testing in the 20th Century
 * 5) [[Wikipedia:Reference_desk/Archives/Science/2017 May 23#Feynman_Lectures._Exercises_.5Bhttp:.2F.2Ftheswissbay.ch.2Fpdf.2FGentoomen.2520Library.2FExtra.2FRichard_Feynman-Feynman_Lectures_on_Physics.252C_Vol._1_Exercises-1964._Volume_1-Addison-Wesley.281964.29.pdf_PDF.5D._Exercise_4-14_.5Bhttp:.2F.2Fhtml.scribd.com.2F91cmvs8wn433jb9d.2Fimages.2F12-90e86da6f5.jpg_JPG1.5D.5Bhttp:.2F.2Fhtml.scribd.com.2F91cmvs8wn433jb9d.2Fimages.2F13-118a2acddc.jpg_JPG2.5D|Feynman Lectures. Exercises PDF. Exercise 4-14 JPG1JPG2]]
 * 6) Have any planes, ships or train cars had cables to increase stiffness or strength?

= May 24 = Reference_desk/Archives/Science/2017 May 24


 * 1) Decentralized electric networks
 * 2) Electric field at plane of non-conducting uniformly charged thin disk
 * 3) Table salt
 * 4) does tb has cure?

= May 25 = Reference_desk/Archives/Science/2017 May 25


 * 1) Can sea water be purified and made into fresh water?
 * 2) Soil formation on the bank of the Nile river
 * 3) How did the common people come to define "organic" to mean "without pesticides"?
 * 4) Human size and power of blows, strikes, kicks
 * 5) 16 Psyche on earth
 * 6) Can hormones be secreted by the endocrine system only?
 * 7) Solar and lunar eclipse in Toronto

= May 26 = Reference_desk/Archives/Science/2017 May 26


 * 1) Mammals that sexually mature later than humans?
 * 2) Exocrine system + endocrine system =?
 * 3) How does a creature adapt to city life?

= May 27 = Reference_desk/Archives/Science/2017 May 27


 * 1) [[Wikipedia:Reference_desk/Archives/Science/2017 May 27#Feynman_Lectures._Exercises_.5Bhttp:.2F.2Ftheswissbay.ch.2Fpdf.2FGentoomen.2520Library.2FExtra.2FRichard_Feynman-Feynman_Lectures_on_Physics.252C_Vol._1_Exercises-1964._Volume_1-Addison-Wesley.281964.29.pdf_PDF.5D._Exercises_4-1...4-16|Feynman Lectures. Exercises PDF. Exercises 4-1...4-16]]
 * 2) Typical revolutions per minute of a fidget spinner
 * 3) Is there any pattern to warning symbols?

= May 28 = Reference_desk/Archives/Science/2017 May 28


 * 1) If babies are never weaned, then will they be able to digest lactose at later ages?
 * 2) What does the word "refractory" in "refractory period" refer to?
 * 3) Re: whale death due to ship strike.  Why not attach a beeping horn to the ships bow to provide warning to whales in imminent danger?

= May 29 = Reference_desk/Archives/Science/2017 May 29


 * 1) What is shame from an evolutionary perspective?
 * 2) Domestic irradiator instead of a refrigerator?
 * 3) Help with understanding a U-series dating method
 * 4) Which plant?
 * 5) Frequency of solar eclipses at a given place
 * 6) Solar eclipse at the poles
 * 7) Does superluminal communication through a (traversable) wormhole inherently imply time travel?

= May 30 = Reference_desk/Archives/Science/2017 May 30


 * 1) The good, the bad, and the immunocompromised
 * 2) About Amader Electronics a popular Bengali Educational website and blog
 * 3) Cancer spreading through the blood
 * 4) Effect of purified vitamins orally and topically vs vitamins in foods orally or topically

= May 31 = Reference_desk/Archives/Science/2017 May 31


 * 1) Bbits per second
 * 2) Is sweetness intensity associated with sucrose quantity?