Wikipedia:Reference desk/Archives/Science/February 2013

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February 1

Wikipedia:Reference_desk/Archives/Science/2013 February 1

1. what's the issue with horsemeat?
2. Gravity waves caused by a relativistic object
3. Coffee and smell
4. Armour and Antiarmour IV
5. Weight of motor
6. Sound, density and bulk modulus in the upper atmosphere
7. SETI

February 2

Wikipedia:Reference_desk/Archives/Science/2013 February 2

1. 0 displacement photon
2. Grapefruit powder
3. Chemistry question
4. Lime burning
5. Why do tortoises live so long?
6. Invention v/s Discovery
7. SHD distribution on optical high speed networks
8. Thanks
9. Historical election to fellow of RAeS
10. Ground state and vacuum state

February 3

Wikipedia:Reference_desk/Archives/Science/2013 February 3

1. Gravity in a bounded universe
2. while we're on the subject of turtle evolution
3. Light bulbs. halogen --> LED
4. Male vs female pain
5. Black holes: Why the most complex objects in the universe?
6. antimatter
7. Chemistry after nuclear decay/transmutation
8. What is this crinkly wood - and why is it so?

February 4

Wikipedia:Reference_desk/Archives/Science/2013 February 4

1. Acupunture for Cerebral Venous Thrombosis
2. freezing insect eggs?
3. Evolutionary purpose of non-reproductive sex
4. Coffee
5. Twin fingerprints

February 5

Wikipedia:Reference_desk/Archives/Science/2013 February 5

1. Yellow rain
2. Law of excluded middle, null hypothesis, and disproof of god
3. feeling "surreal" or like the world is a fabrication or a simulation
4. Zycosoil
5. Chelating?
6. Vacuum of space
7. Intermezzo (zolpidem tartrate)
8. microbiology
9. Live double-headed eagles
10. Black sky at night
11. Economic growth , what curve?
12. Burnt stew

February 6

Wikipedia:Reference_desk/Archives/Science/2013 February 6

1. Law of excluded middle, null hypothesis redux
2. Touch one part of your body, feel it elsewhere
3. single slit - interference in a slit
4. POM application for ethanol
5. pKa-value in the medicine substance articles?
6. Tests on a newborn baby

February 7

Wikipedia:Reference_desk/Archives/Science/2013 February 7

1. New Horizons photos of Pluto
2. biology
3. Unseen effects on water when going down a drain
4. Should I get the shingles shot?
5. Reventazón River vs. Reventado River in Costa Rica

February 8

Wikipedia:Reference_desk/Archives/Science/2013 February 8

1. Camera quality as a function of weight
2. Anti-cancer molecule TRAIL
3. MTBE
4. Jupiter and the Romans
5. About isotopes
6. Forms of energy
7. Iranian and Iraqis anti-aircraft air defense
8. Kite with extremely long string
9. Symbol of mass number
10. Why don't the electrons fall into the nucleus?
11. How to freeze water in 5 seconds?
12. Space between atoms
13. DVI and VGA cable
14. Amount of heat input required to cut stainless steel plates

February 9

Wikipedia:Reference_desk/Archives/Science/2013 February 9

1. Organs Questions
2. Particle-wave duality
3. Covering bare floorboards
4. why was rutherford model of an atom discarded ?
5. Why is the GAU-8 effective?
6. do we know what Mars sounds like?
7. Why is my charger emitting high pitched sound?
8. i think i've heard that Leptin inhibits Gerlin. is that true?
9. in simple words
10. Graphite

February 10

Wikipedia:Reference_desk/Archives/Science/2013 February 10

1. Annihilation
2. Mass of a test tube full of bare nuclei
3. solar ac dc inverters failure
4. Do photons produce gravitational field ?
5. Planets and frequency of sound
6. Tensor
7. Hydrogen Synthesization
8. Power lines: buried or overground?
9. Breakdown of a Barrel of Oil
10. Upright exercise bike question
11. Asteroid 2012 DA14 and orbital resonance
12. Dr. Imenson (spelling?) medical doctor

February 11

Wikipedia:Reference_desk/Archives/Science/2013 February 11

1. Anodisation of Aluminium
2. Betretta M9 hammer hole
3. hair drier off lithium batteries?
4. Resonant frequency of an aluminium bar.
5. Atom Volume
6. Logic
7. Geological change in recorded history
8. Splitting water with a vacuum
9. tube amplifers

February 12

Wikipedia:Reference_desk/Archives/Science/2013 February 12

1. Engineering contractors
2. Densest element ?
3. Spandex vs elastic
4. Media coverage of coronaviruses compared to other infectious diseases
5. Identify a part of the body
6. Protocol for asteroids
7. Camphor wood
8. Why was Typhoid Mary an asymptomatic carrier?
9. Gibbs free energy
10. Properties of blood
11. high school physics
12. Little Ice Age
13. Stove vs. oven usage costs

February 13

Wikipedia:Reference_desk/Archives/Science/2013 February 13

1. Einstein's theory was wrong
2. How many times thicker is the dermis than the epidermis?
3. Value chain of SLES (Sodium Lauryl Ether Sulfate)
4. Homo sapiens subspecies
5. What is the latest on olive oil and antioxidants? Are they supposed to be good or bad for you now?
6. KWh problem
7. Where can I find real video of the moon orbiting the Earth from perspective outside Moon's orbit?
8. Coefficient of Performance
9. basic theoretical question (no application)
10. Could any engineer devise a toilet operation contingency plan for cruise-ships?

February 14

Wikipedia:Reference_desk/Archives/Science/2013 February 14

1. String vibration close to resonance.
2. Egg whites and avidin
3. Just a small Question?
4. What kind of monkey is this?
5. looking for a closeup of an anglerfish lure
6. world-wide wind speed average and standard deviation
7. Autosomal Chromosomes

February 15

Wikipedia:Reference_desk/Archives/Science/2013 February 15

1. Lists of textbooks
2. Perthes disease
3. Research access to data in the New England Journal of Medicine
4. Fluorine Swallowing
5. Air pressure
6. The difference between Fjord and Gulf?
7. The role of splitter plates in jet engine inlet geometry
8. Entropy
9. Entropy production

February 16

Wikipedia:Reference_desk/Archives/Science/2013 February 16

1. One Kidney Giving Out
2. What do these terms mean?
3. How many isomers does 1024-ane have(both including and excluding stereoisomers)?
4. Conservation of energy
5. About orbits of planets, electrons and other objects in dimensions higher than 3
6. Next glacial period and survival of civilization
7. was robert boyle an idiot.? or only had a partial understanding of the world.
8. Russian meteor
9. Causes of raised pcp levels in the body
10. what does it mean that relativity and qm are incompatible?

February 17

Wikipedia:Reference_desk/Archives/Science/2013 February 17

1. Regarding the article Homogenized Milk and Atherosclerosis
2. KEF-2013
3. Quantum tunneling
4. Relevance of physics to microbiology.
5. 3d effect when watching TV while you look through a small hole with one eye
6. velocity of meteor
7. Underground bunker effects of the Russian meteoroid?

February 18

Wikipedia:Reference_desk/Archives/Science/2013 February 18

1. Why didn't Earth's gravity capture the asteroid 2012 DA14?
2. "Cannon fire" following meteorite impacts
3. tempature of LED
4. Water heater producing hydrogen
5. The girl with an IQ of 161
6. Disease transmission from sharing a cup?
7. Water jet that pops up after somethings drops in water
8. Sulfuric acid and nitric acid for cleaning glassware
9. Arthur C Clarke Space Elevator
10. Salticid eyes
11. Identify guinea fowl-like bird with white cheeks and orange wattles
12. Standard components in Edison, Tesla, and Marconi's day
13. freezing point of water

February 19

Wikipedia:Reference_desk/Archives/Science/2013 February 19

1. contracting rabies
2. Double-slit experiment and scale
3. wireless electricity transmission
4. Classification of animals
5. Is it possible to discharge electricity by alternating current (AC)?
6. Biochemistry
7. Pantoon?
8. How do you polish a copied key to make it work better?
9. Rope walking
10. Phone signal disconnecting a mouse
11. determination of pesticides by QuEChERS method using LC-MS/MS
12. Polarized lens sunglasses
13. Displacement vs. Distance
14. Really simple question about boiling water
15. Gun safety
16. Vacuum metastability event implosion?
17. applications
18. Speakers & moisture/humidity

February 20

Wikipedia:Reference_desk/Archives/Science/2013 February 20

1. Recurring smell
2. Rubbing two stones
3. Space-time
4. The mass of the solar system is slightly less than the masses of sun and planets individually
5. Question about a strange polymer
6. Momentum gained by body = Force x Time during which force acts
7. Tonsillar cancer
8. Liquid with highest boiling point

February 21

Wikipedia:Reference_desk/Archives/Science/2013 February 21

1. Mercury thermometers
2. Signs of life on Titan and Europa?
3. Time running slowly
4. Calculating the electric potential between two point charges
5. Palladium Hydride
6. Pluto to have a watery surface
7. Determining asteroid's orbits
8. If Einstein hadn't invented the theory of relativity, would someone else have?
9. Average energy obtained for hydrolysis of a glycosidic bond and for a peptide bond
10. pupae
11. Materials that are compatible with the use and storage of chlorine pentafluoride, perchloryl fluoride, monomethylhydrazine, and diethylenetriamine?

February 22

Wikipedia:Reference_desk/Archives/Science/2013 February 22

1. What is the velocity of a body on a circular path?
2. how different are the different species of manatees?
3. Fat burning zone
4. Conditional Probability
5. Alternate wheel arrangement
6. Blast wave
7. Time period of two identical pendulum
8. Matter wave diffraction
9. Where did the mercury in coal come from?
10. BCNT - what's the deal with 11B?
11. An alloy that expands on heating
12. Expanding alloys
13. A sealed ecosystem that thrives for 40 years???
14. ips cells
15. does pwm (pulse width modulation) led's hurt eyes?
16. Humidity
17. what's the essential difference between capacitor and a battery?

February 23

Wikipedia:Reference_desk/Archives/Science/2013 February 23

1. Identity involving partial derivatives
2. Non-calculus proof of E=mc^2
3. Coal Fired Boilers - Briquettes
4. Selective Knockout
5. Feeding of K-9 dogs
6. Is it possible that a supertanker or a cruise ship that is made of all woods, treenails and tar, can float for a long time?

February 24

Wikipedia:Reference_desk/Archives/Science/2013 February 24

1. Crushing
2. Quantum mechanical stability of historical timelines
3. Would german V-2 rocket left earth orbit?
4. Liquid nitrogen and frostbite
5. T-90 tank shtora system
6. String or Higgs boson
7. Name of all 11 dimensions of space
8. Food energy
9. Our mirror image is chiral or achiral
10. Vegetarian Experience
11. stereoscopic images
12. Rate of exothermic reaction
13. Better quality safety glasses

February 25

Wikipedia:Reference_desk/Archives/Science/2013 February 25

1. Pot stats in USA
2. Lithium ion batteries
3. Does exercise really result in weight loss?
4. Ozone hole over Antarctica
5. Why protein requirement is calculated on the basis of total body weight?
6. Nelson Mandela Bridge
7. Child cognitive development - how old does a child have to be to realize that money has worth?

February 26

Wikipedia:Reference_desk/Archives/Science/2013 February 26

1. 4K resolution tv
2. In what respect two protons (or any two fermion) are not identical?
3. T-90 tank Shtora system
4. How much sensation does a tortoise/turtle have in its shell?
5. About the gravity field of black hole
6. endosymbiotic theory of prokaryotic evolution
7. Reversing light-emitting diode
8. Why "Hornblower's Sign?"
9. One photon at a time
10. Log laws
11. Angiosperms
12. when a capacitor discharges, is it all converted to heat + light? what percent light? if light can't escape, is it all converted to heat?
13. What kind of fish is this
14. T-90 Shtora System
15. Anisotropic aquifers
16. Meat tastes
17. Homosexuality in identical twins

February 27

Wikipedia:Reference_desk/Archives/Science/2013 February 27

1. practically, how many joules does it take for a helicopter to lift itself?
2. Solar powered garden fountains - suitable latitudes?
3. Dark matter?
4. American and Russian Tank Designs
5. Why is sleep associated with "scary"?
6. Stagnation pressure
7. Space Travel Time Dilation Chart
8. Calculating Shaft Power
9. The writers of the IQ tests are the smartest persons on earth?!
10. Engineering and medicine

February 28

Wikipedia:Reference_desk/Archives/Science/2013 February 28

1. Emotional impact of surveillance
2. increasing white blood cell count
3. Oldest extant species
4. two questions about flight. 1) why do helicopters have 4 blades?
5. second theoretical question about aerodynamics
6. Organic chemistry - Flavons and Flavoniods
7. An optical distortion?