What is Loss: Definition and 841 Discussions

Loess (US: , UK: ; from German Löss [lœs]) is a clastic, predominantly silt-sized sediment that is formed by the accumulation of wind-blown dust. Ten percent of the Earth's land area is covered by loess or similar deposits.Loess is an aeolian (windborne) sediment being an accumulation of: twenty percent or less clay and the balance mainly equal parts sand and silt typically from 20 to 50 micrometers per particle often loosely cemented by calcium carbonate. It is usually homogeneous and highly porous and is traversed by vertical capillaries that permit the sediment to fracture and form vertical bluffs.

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  1. D

    How Can You Calculate Daily Water Loss in a Heated Indoor Spa?

    I am interested in finding how to calculate daily water loss for a heated water spa located in a temperature-controlled pool room. The water volume and surface area are constant. I want to determine the amount of daily water loss as spa water temperature, ambient air temperature, and relative...
  2. M

    News Police State of the USA/The loss of civil liberties at home

    "Utah Ravers Treated Like Terrorists" http://www.dailykos.com/storyonly/2005/8/22/13030/7546 Police raided a legal event without a warrant and teargassed people who didnt deserve it. There is video and pictures for proof as well. ACLU is involved, and lawsuits are being filed against the...
  3. A

    News The Ultimate Loss of Civil Liberties: Innocent Man Shot Dead in UK

    Hello all I've just read today's BBC main news story: This is barbarism.
  4. Hans de Vries

    Hawking's preprint: Information loss in Black holes

    Found this on Woit's: http://www.arxiv.org/abs/hep-th/0507171 Authors: S. W. Hawking Report-no: DAMTP-2005-66 "The question of whether information is lost in black holes is investigated using Euclidean path integrals. The formation and evaporation of black holes is regarded as a...
  5. P

    Loss of Biodiversity Due to Climate Change & Invasive Species

    Biodiversity is affected through a variety of means. Landscaping with non-native plants that adapt well to a new climate, for example, can allow the non-native plant to spread at the expense of native plants. Ranching has led to problems in places such as Death Valley, a fragile ecosystem where...
  6. T

    Harnessing Heat: Can We Make Energy Out of Heat Loss?

    This is actually pretty embarrassing for me but a question just popped in my head today and in my three years of studying Engineering Physics nobody gave me the answer: Why is it that heat effects are always considered as energy loss? Really. I understand that's not really convenient if...
  7. B

    Radial Track, Find Loss of TME

    looks like a fun problem, just got to understand it: A 500g block slides down a radial track with height of 1.0 m, it's radius is 1.0 m, with velocity of 4 m/s at the end of the track. what is the loss of the TME? Disipation of energy problem: TMEf - TMEo F * D = K.E.f + P.E.f - (K.E.o...
  8. B

    What exactly does without loss of generality mean

    What exactly does "without loss of generality" mean What exactly does "without loss of generality" mean and how can you formally tell when you are justified in using it? I understand what it means and how to use it informally but is there formal justification for it? When you say "WLOG let...
  9. M

    Accelerating Universe and the Loss of Mass

    I had a thought the other day that I would quite like feedback on: Could the universes accelerating expansion be fuelled by the amount of mass in the universe decreasing? Is it possible that a black hole could become so massive that it tears away from/gets pinched off spacetime, how much mass...
  10. hypatia

    Tragic Loss: 3 MSU Students Killed in MI Crash

    http://msnbc.msn.com/id/7896073/ Today I went to a tree planting in honor of these students, sponsored by all the other teams in the event. About 20 people from MSU came. A few of them will spend the night with me. The accident happened a few weeks back, there past the state of shock, and...
  11. T

    Calculating Flow Rates in Pipe Networks: Head Loss Equations

    Hi. I'm trying to determine the flow rates of water in a pipe network. At a junction in a pipe, for example a simple y junction where the water heads out of a tap down a short length of tube before splitting into two lengths of tube of the same diameter, would the head loss equation for one of...
  12. D

    Power Loss in a 10kV, 5ohm Transmission Line

    -A transmission line has a resistance of 5 ohms. Calculate the power loss in the line when 10 000 kW are transmitted at 10 kV... I don't know where to start, what formula am I supposed to use? I'm sure the second I find out its going to be soo easy, but any help would be apreciated. Thanks...
  13. P

    What is the Power Loss in a 20 Ohm Resistor in a Circuit?

    ok consider the circuit. what is the power loss in the 20 ohm resistor in J/s? ok so what i did was that... and i don't know where to go after... please help
  14. W

    Could Light Energy Loss Explain the Expansion of Space?

    could the lost energy from light cause the expansion of space? i know we have no evidence that light can lose energy but over a long distance and i mean like a Mpc or more. TO me this almost seems like a chicken and and egg question.
  15. T

    Calculating Boiler Radiation Loss from Chimney Gas Analysis

    I analyzed the chimney gas from a 70 kWboiler burning pellets. I found the temperature to be 140C, the CO2 value was 8%, and the room temp was 22C. Is it possible from this to calculate the boilers radiation loss? If not, what other information do I need? I used Siegert's formula to find the...
  16. A

    Fluids: calculate pressure loss due to turns in pipe flow

    Hi, I am trying to estimate the flow rate in a long pipe of rectangular cross section. The pipe is 100 m long and has twenty 180 degree turns. I have been able to calculate the pressure drip for a 100m straight pipe, but I have not been able to estimate the losses due to the turns. Is there...
  17. BasketDaN

    Can lost energy from inefficiency only be transferred as heat or radiation?

    I am just double checking an idea that I've always figured was true, but never really asked someone who knows about. In basically any machine that is not 100% efficient, the only "place" the lost energy (due to the inefficiency) can go is into its surroundings as heat energy, or radiation...
  18. K

    Answer: Calculate Time for Heat Loss to Rise to Normal

    Suppose a man is losing heat at a rate of 300 W. His body temperature is 1.5 deg C below normal, and he begins to shiver. If his mass is 65 kg, how many hours will it take for his temperature to rise to normal? Correct answer: 0.75 hrs General feedback: First determine how much energy is...
  19. V

    The simplest formula for conduction current,displacement current and loss tangent

    Apparently my lecturer has given me this type of quest and i really have no idea how to do this quest..anyone know the formula for conduction current..displacement current and loss tangent..please give me brief idea how to do it...what i know is that for displacement current i have to...
  20. P

    The End of Transerve Wave: Uncovering Energy Loss

    There will be no waves for the transerve wave any more after a period of time, why? Disturbance is added, it starts to move. Where does the energy lose? Why do the particles always try to archieve at their equilibrium level(position)?
  21. J

    Medical Headache Relief & Memory Loss Solutions

    Headach nedds what medicine ? What med to drink to forget something ?
  22. N

    Calculating Final Speed & Kinetic Energy Loss for Two Rotating Disks

    Q. A disk of mass M1 = 350 g and radius R1 = 10 cm rotates about its symmetry axis at finitial = 198 rpm. A second disk of mass M2 = 198 g and radius R2 = 5 cm, initially not rotating, is dropped on top of the first. Frictional forces act to bring the two disks to a common rotational speed...
  23. C

    Does Mass Decrease as it Emits Gravitational Force?

    Hi everybody, Does someone know if mass shrinks while it emits gravitation? What I mean is either the gravitation field point of view: Does mass need to continuously produce a field of gravitational force and by this lose energy? Or the particle view: If mass continuously emits...
  24. E

    Solving Mass Loss: Beginner Chem Student Struggling

    I am beginner chem student and I am lost with mass loss. We did an experiment in lab where we are trying to identify a mystery metal. let me describe. We weighed our flask, then weighed our flask with about 1.5g of the mystery metal. Then we added 20ml of 6M HCl to a graduated cylinder and...
  25. W

    Information Twin , loss Paradox?

    Information "Twin", loss Paradox? Lets say I have a powerful telescope that can resolve focus instantly, I place a precission mirror at a Earth location, and I am with the telescope onboard a craft that can accelerate to a great speed. At the back of the craft I line up the telescope to...
  26. I

    QM Compton scattering energy loss; check of derivation

    Okay, so the question is an electron of energy 100 MeV collides with a photon of wavelength 3x10^(-3) m (ie: the CMB). What is the maximum energy loss of the electron? After doing a few derivations for formulae, I came up with this one at work...could someone please let me know if there is...
  27. P

    Weight Loss Pills, they useful? :p

    Hello, Recently I received a sample Weight Loss pill from Advantage... Wondering if I can use them... They ddin't say teens can't use them... Just wondering if anyone know there are any side affects of using Weight Loss pills. I am currently about 150lbs... i am about 5'11''. (71 inches).
  28. H

    Laser Gun Technology: Secret Stories & Powerful Effects

    As last thread about laser question, Don't tell me some good information here as a new question. Is it like the external world humans laser gun in principle within some secret stories. That is very powerful no source laser gun.
  29. Evo

    Unusual Pigment Loss in Beauty Marks and Freckles

    You know those little brown spots, some slightly raised that are referred to in the English language as "beauty marks"? I though those were permanent. I've had one on my right little finger for my ENTIRE life. I just looked down and noticed that although the little dot is still slightly...
  30. loseyourname

    Mechanism of Weight Loss with DNP: Disrupting Chemiosmosis in Mitochondria

    This was a question given to one of my classes on an exam some time back. I wonder if anyone here can nail it. I know the answer now of course, but I'm curious to see what the posters will think.
  31. Dissident Dan

    Weight Loss Plan: Smoking 2 Packs/Day for Results

    I have the next new wonder-fad in weight loss: The Smoker's Weight Loss Plan(tm)! Everyone knows that smoking can make you lose weight. My plan calls for smoking at least 2 packs per day. You'll be shedding the pounds in no time! (Whether fat or muscle) Sure, it makes you stink...
  32. R

    Climbing 1600 Stairs: Energy Loss & Walking Equivalent

    I am climbing 1600 flights of stairs . Total height climbed is 1000ft. I weigh 60 kgs. What is the energy loss in calories? To lose the same amount of energy how long I have to walk on a flat surface at 5 Km per hour? Thank you Reena
  33. J

    The surface of Mars, the loss it’s of atmosphere and the fate of earth.

    The surface of Mars, the loss it’s of atmosphere and the fate of earth. I think that what we would expect on Earth (the potential of the Earth's electro-magneto-dynamic) is not on Mars. We will not find a molten core, nor a strong atmosphere. The rotational speed of Mars is adequate but the...
  34. F

    What Factors Affect the Rate of Heat Loss?

    Hi everyone! I have some questions... 1. Describe the fall in the temperature of a cooling substance as a function of time. 2. Describe the effect of temperature gradient upon the rate of temp. fall. 3. Describe the effect of the nature of the substance upon the rate of fall...
  35. F

    What Factors Affect the Rate of Heat Loss?

    Hello again... 1. Some claim that the freezer makes ice faster if one pours boiling water instead of cold water on the ice trays. Is this true? How come? 2. If one intend to drink a coffee soon, he has to stir it with teaspoon. How does that help? 3. How does a thermos bottle keep...
  36. F

    Rate of Heat Loss: Newton's Law & Factors

    Hello everyone. I have questions to ask. 1. What is Newton's Law of cooling? 2. The factors that affect the rate of cooling of a body are nature of a substance and temp. gradient. What are those? 3. How does each affect the cooling of a body? Are each of them varies...
  37. C

    Mysterious Time Loss in One Bedroom: Investigating the Unexplained

    my two wrist watches lose time overnight on an erratic basis and only in one bedroom of the house. Not every night and not the same amount of time(10-60 minutes).Each watch will lose time about twice a week and not the same amount of time and not necessarily on the same night.Neither watch loses...
  38. wolram

    Evidence of Hawking Radiation: What We Know

    can anyone tell me if "hawking radiation" has been observed? or if there is evidence of its existence? nasty stuff..
  39. Les Sleeth

    Spontaneous Energy Loss in Light

    I have a question I hope someone can help me with. Does light ever spontaneously lose energy? What I mean is, would, say, an infrared wave be traveling along and suddenly shift to microwave radiation, and maybe later to a radio wave, without any outside influences having affected it? If...
  40. E

    Living Better Together: A Guide to Reducing Mistreatment & Energy Loss

    Here I go... I think the world would be better if more of it's inhabitants do what they think is best for all of it's inhabitants overall.I think this would lead to a huge decrease of mistreatment of living beings. This could be for example the murder of animals for their meat instead we might...
  41. A

    Question: heat loss from a computer case

    Hello all. I have not studied any thermodynamics, and very little physics. One unit of mechanics and one unit of wave mechanics so far. I was wondering about laptop computer cases. Some now are titanium, some still plastic. Is titanium better for absorbing and radiating out the heat? Ie...
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