Wikipedia:Reference desk/Archives/Science/April 2017

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April 1

Wikipedia:Reference_desk/Archives/Science/2017 April 1

1. Repeated exposure and emotional response
2. Synchronizing cardinal grammeters
3. Feynman Lectures. Lecture 51. Ch.51-2 Bore in a channel [http://www.feynmanlectures.caltech.edu/I_51.html]
4. Pine trees
5. Extraterrestrial eyes that absorb non-electromagnetic waves
6. Can modern humans live on a wild food diet?

April 2

Wikipedia:Reference_desk/Archives/Science/2017 April 2

1. questions about asteroids and dwarf planets
2. Is there any organ in the body that's normally not grow after the birth?
3. Is it better / worse to transplant seed without its coat?
4. The "good pain"
5. How are other galaxies receding from us

April 3

Wikipedia:Reference_desk/Archives/Science/2017 April 3

1. type of orbit?
2. Mathematically, what is dubstep?
3. Complex infrastructure programme organisation structure

April 4

Wikipedia:Reference_desk/Archives/Science/2017 April 4

1. Karate
2. Growing plants in a basement
3. Cultivated plant from Hunan, China

April 5

Wikipedia:Reference_desk/Archives/Science/2017 April 5

1. Weight loss and mass loss
2. Lead used to fix a connecting bar
3. Epistemology and ontology of medical sociology (sociology of illness and health) and health psychology.
4. How fast could an 18-wheeler cab do 0-60 with an aerodynamic shell attached?
5. What does the defibrilator do to the heart when it febrilates?
6. Vaccines

April 6

Wikipedia:Reference_desk/Archives/Science/2017 April 6

1. Extraterrestrial government and economy
2. Could a natural breast look like fake?
3. Equilibrium question - Physics
4. What is the difference between the cells of the electrical conduction system to the rest heart muscle cells?
5. Tetrapod Clades that Survived the K/T Boundary?
6. Are longer focal distance magnifiers more expensive to manufacture?
7. Is there any danger of the world running out of oil or does other energy advancements make that unlikely?

April 7

Wikipedia:Reference_desk/Archives/Science/2017 April 7

1. "Death by old age"
2. Schwarzschild geodesics - references
3. What other cities and highway lighting authorities are eliminating/eliminated HPS streetlights?
4. Engineers and project managers
5. When a battery has 10000 mAh

April 8

Wikipedia:Reference_desk/Archives/Science/2017 April 8

1. Am I right-handed or left-handed?
2. Nutrient-dense food with high risk of bacterial and parasite infection vs. nutrient-scarce food with high risk of chronic illnesses
3. Why was azeotropic isopropanol not sold in stores in the past?

April 9

Wikipedia:Reference_desk/Archives/Science/2017 April 9

1. Plutonium and its electrical conductivity
2. The effects of caffeine and alcohol
3. Are nuts made of cells?
4. Will the human population reduce in numbers because of global climate change?

April 10

Wikipedia:Reference_desk/Archives/Science/2017 April 10

1. Transgender suicide rates
2. UV-vis spectroscopy
3. Downsides of fresh beef and natural preservatives/colors/flavors
4. Is 580°F twice as hot as 60°F? and other weird temperature math

April 11

Wikipedia:Reference_desk/Archives/Science/2017 April 11

1. Feynman Lectures. [http://www.feynmanlectures.caltech.edu/I_51.html Lecture 51]. Ch.51-2 Bore in a channel 2 [https://en.wikipedia.org/wiki/Wikipedia:Reference_desk/Archives/Science/2017_April_1#Feynman_Lectures._Lecture_51._Ch.51-2_Bore_in_a_channel_.5B1.5D archive]
2. Insanely low calories
3. Omnidirectional vs. tight beam broadcast
4. What do "weeds" do in any ecosystem?
5. Beginning of Period R

April 12

Wikipedia:Reference_desk/Archives/Science/2017 April 12

1. If a person eats an apple seed, then will an apple seedling grow inside him?
2. Windows in highrise buildings
3. How many trees need to be planted in order to reverse global climate change?
4. Feynman Lectures. [http://www.feynmanlectures.caltech.edu/I_51.html Lecture 52]. [http://www.feynmanlectures.caltech.edu/I_52.html#Ch52-S4 Ch.52-4], [http://www.feynmanlectures.caltech.edu/I_52.html#Ch52-S5 Ch.52-5], [http://www.feynmanlectures.caltech.edu/I_52.html#Ch52-S6 Ch.52-6] Reflection symmetry
5. Are humans only concerned about climate change because they know they will be affected negatively?
6. Clams, Oysters, Pearls in Freshwater ??
7. Distance estimate to the outside objects in driverless cars
8. Could future fossil fuels be dying now?

April 13

Wikipedia:Reference_desk/Archives/Science/2017 April 13

1. Feynman Lectures. [http://www.feynmanlectures.caltech.edu/I_51.html Lecture 52]. [http://www.feynmanlectures.caltech.edu/I_52.html#Ch52-S7 Ch.52-7]
2. Cats and dogs
3. Laser pointer reflected light harmful to eyes in close proximity?
4. Adhara (second brightest star of Canis Major)

April 14

Wikipedia:Reference_desk/Archives/Science/2017 April 14

1. How do I know that the municipal water supply is safe?
2. Summer ice in Hobart?
3. At what point is something "wild" or "domesticated"?
4. Hydrogen vehicles
5. Radio broadcast range and transmitter wattage
6. Another Australian weather thing

April 15

Wikipedia:Reference_desk/Archives/Science/2017 April 15

1. Radio propagation, part 2
2. Pressurised carbon dioxide cylinders
3. Physics, Overview of Halliday and Resnick
4. Temporarily leaving a profession.
5. Edible disinfectants ?
6. Transgender suicide rates

April 16

Wikipedia:Reference_desk/Archives/Science/2017 April 16

1. DC-3 mountain ops
2. Project_engineering
3. Sexual differentiation delay
4. Magnifying glasses/diopters
5. water temperature of the Columbia River
6. Natural selection and attractiveness - related?

April 17

Wikipedia:Reference_desk/Archives/Science/2017 April 17

1. Fins
2. Governments
3. Injected drugs coming out in the feces
4. Mixing oil and water

April 18

Wikipedia:Reference_desk/Archives/Science/2017 April 18

1. Stupid question: What flowers are these?
2. Ostrich wing span
3. Wheatgrass

April 19

Wikipedia:Reference_desk/Archives/Science/2017 April 19

1. ISO classification of materials
2. Moving across the monkey bars
3. Why the mixing of DNA is prohibited in human by law?
4. Winged ants
5. Feynman Lectures. [http://www.feynmanlectures.caltech.edu/I_52.html Lecture 52].[http://www.feynmanlectures.caltech.edu/I_52.html#Ch52-S5 Ch.52-5] Reflection symmetry 2. [https://en.wikipedia.org/wiki/Wikipedia:Reference_desk/Archives/Science/2017_April_12#Feynman_Lectures._Lecture_52._Ch.52-4.2C_Ch.52-5.2C_Ch.52-6_Reflection_symmetry archive]
6. Would effervescent vitamin c tablets still be usable after 20 years?
7. The predictability of humans
8. Distinguishing phytoplankton from zoo plankton
9. 1.0x magnification lens - what is the purpose?
10. Jellyfish evolving into land creatures
11. Why does Defibrillator has two stickers to attach the chest of a victim?
12. Near Earth object flybys and statistical oddities

April 21

Wikipedia:Reference_desk/Archives/Science/2017 April 21

1. Mars the Orange Planet
2. Constraint vs Restraint (Physics and Maths)
3. Scientific knowledge
4. Specialty or profession
5. Identifiable whisperers

April 22

Wikipedia:Reference_desk/Archives/Science/2017 April 22

1. Making big chicken breasts
2. Would sleep deprivation, weed or drunkness change an eyeglass prescription?
3. Time travel paradoxes
4. Feynman lectures authorship and copyright
5. Virtual urge to urinate after drinking water
6. Is the longitude linear in time when I throw a ball in an angle?

April 23

Wikipedia:Reference_desk/Archives/Science/2017 April 23

1. Climategate 2.0: New E-Mails Rock The Global Warming Debate
2. A fish like this
3. Why are there two types of oxygen based on the agreement of spins in different orbitals?
4. The science of making vegetables taste like meat

April 24

Wikipedia:Reference_desk/Archives/Science/2017 April 24

1. History of science, fringe theories
2. Measuring a blow to a ball
3. Classic American Cars

April 25

Wikipedia:Reference_desk/Archives/Science/2017 April 25

1. Why??
2. Is there a deeper rail canyon (compare street canyon) in the world than the Chicago El?

April 26

Wikipedia:Reference_desk/Archives/Science/2017 April 26

1. Intermodal container
2. Installing a new thermostat on a 240V household heater
3. Cargo spacecraft visiting the ISS
4. Stowaway on a trip to space
5. video
6. CO2 nose tingling
7. AC Transformer Ratings

April 27

Wikipedia:Reference_desk/Archives/Science/2017 April 27

1. Portion control, food rationing, and economics
2. How are hard jelly sweets made?
3. Can people still lose weight eating junk food?
4. The asteriod impact that wiped out the dinosaurs

April 28

Wikipedia:Reference_desk/Archives/Science/2017 April 28

1. Girls having more moles on arms
2. Wind rose
3. Is "queen ant" or "queen bee" accurate or anthropomorphizing bees and ants?
4. Quite an attachment?
5. Alien fungus?
6. Question about the Time Dilation

April 29

Wikipedia:Reference_desk/Archives/Science/2017 April 29

1. Perseid meteor shower and other meteor showers, could it be from the Earth/Moon breakup?
2. Is there a name for this mental defect ?
3. Cold bouncy balls
4. Firefly question
5. If jetliner pilots both die soon after giving autopilot the controls on a SYD(morning)-LAX nonstop?
6. Eating a small amount of sugar and carbs while in starvation induced ketosis?
7. Air pressure in soccer ball, less than 1 bar

April 30

Wikipedia:Reference_desk/Archives/Science/2017 April 30

1. Feed conversion ratio / Efficiency of food conversion
2. Why are multicellular, eukaryotic organisms more difficult to kill than prokarotic, unicellular organisms?
3. Life on the sun/stars
4. Feynman Lectures. Exercises [http://theswissbay.ch/pdf/Gentoomen%20Library/Extra/ 1964]. Exercise [https://html2-f.scribdassets.com/eibnqst4w4bgnuc/images/7-ef915d7573.jpg 1-3]
5. Pouring hot water into a glass with a spoon inside
6. Separately living transitional species