Green Definition and 281 Threads

Since it obviously takes energy and extra amino acids to express the green fluorescent protein, so it's possible that bacteria expressing GFP might have slightly lower fitness (on average) than bacteria that aren't expressing GFP. I'm sure the effect is negligible in most cases. But maybe...

When we want to calculate the n-point function in the position space, it's always very difficult. For example, when we're calculate the 3-point function of \phi^3 theory in position space, we would get an integral \int d^4 z \frac{1}{|z-x_1|^2|z-x_2|^2|z-x_3|^2} It seems hard to integrate it...

Why is no green color on the sky at twilight??

This morning, I was lying on my bed, looking at the bright morning light coming in through the window. The blinds (which are white) were at least half shut, so much of the light was filtered through them. I then stared up at the ceiling, and saw a nebulous patch of green. I shut my eyes, and...

I have been trying to calculate how far a golf ball will travel on a level green given the following variables: The initial velocity of the ball is 1.49 m/s The coefficient of friction between the ball and the green is .0409 The mass of the ball is 0.046kg The diameter of the ball is 42.6mm...

Hi, I have this pretty cool 5mW green laser and I'm wondering if it is legal as long as I don't try to blind drivers and pilots.

On a recent reality show a young couple wanted to purchase a second home in the pacific northwest as a getaway. They claimed to be strong environmentalists and wanted a 'green' home. So what is wrong with this picture? I mean they can afford it so why not? Well there's nothing wrong with...

In studying the scattering problem, one should know green function in free space. while in two dimension, green function is the hankel function, seen in the attached file. bu i got confused in the second equation in the attached file. could anyone give me some details about this relationship? it...

The antenna cable tranfers only the 3 frequencies of green, red and blue, yes or no?

Question: Before it collapsed in 1989, Green Bank's 300-foot diameter telescope mapped the sky in H I. What was its resolving power? I believe the formula you would use is resolving power = (wavelength in microns) / (diameter in meters) So the diameter in meters would be about 91.44 m, but...

How is it possible to see the light path of a green laser pointer?

I was out in my backyard performing some astronomic observations for azimuth and latitude and was treated to a few of the recent meteors. I have seen a few different colored ones and it got me to wondering. I have heard of red, blue, white and other colored stars, but don't ever remember...

Well, at least this one is: http://www.myfoxphoenix.com/dpps/news/offbeat/pea-of-life-grows-in-ny-man's-lung-dpgonc-km-20100810_9112207

Hypothetically if your in a jet or spaceship & are shining a green laser pen out the window how fast must you travel to cause the green light (570 nm) to change into low energy blue light (475 nm)

Apparently this is a possibility: http://www.timesonline.co.uk/tol/news/world/middle_east/article7148555.ece The "stone age" monarchy terrified of the "stone age" theocracy! The real unknown is whether Obama would shoot down an IAF mission over Iraq en route to Iran. George Washington was...

There exists very simple formula for Green function for wave equation: G(t,x,t',x') = \delta (t-t'\pm \frac{|x-x'|}{c})/|x-x'| . I wonder whether there exist similar formula for Green function for Klein-Gordon equation (with mass >0) for any boundary condition.

I don't understand the green house effect. According to wikipedia, the green house effect is the result of non-directional re-emission of thermal radiation after being reflected from the ground from water vapor, methane, carbon dioxide etc., but shouldn't it cancel itself out? Shouldn't just as...

Hello guys, I got a question about one point in the Green's theorem proof that appears in Apostol's Mathematical Analysis, first edition, Ed. Addison Wesley. More exactly, in the theorem 10-42, immediately previous (and essential) to Green's (p. 287-289). Please, if this is too involved or...

which colour is brightest (red monochromatic light, green monochromatic light and blue monochromatic light )? and which light will give highest radiant flux? why? Thank you

By now i must be driving you guys crazy with my relativity questions , but this is my last one! i swear! =] Homework Statement A noted physicist was stopped by police for traveling through a red traffic light. The physicist argued that to because he was traveling fast, the colour of the...

Competition for algae? http://www.physorg.com/news144958975.html

So the latest thing I've seen being talked about is GEM*STAR (Green Energy Multiplier*Subcritical Technology for Alternative Reactors) http://nextbigfuture.com/2010/04/molten-salt-based-accelerator-driven.html They claim they are leveraging the ever improving efficiencies in producing...

On page 56 last paragraph Brian give example of a train paradox where two person have clock and there is two observer on on the train the other outside. They agree to set there clock at 12:00 when they see the light open witch is placed between them. From there perspective each clock will be...

as a student in physics, i cannot see the usefulness of green function to me, the definition of a green function is ugly and singular we have to deal with functions that are not smooth, e.g., the derivative is not continuous at some point. How these functions can be useful in math and...

im currently a freshman majoring in ME, and in the future want to work with (dont know specifically what yet) renewable energy, designing more efficient energy-harvesting systems, etc. but, i know there are tons of kids in my generation aspiring to do the same. is there a specific...

In my project, we enconter such kind of bessel's differential equation with stochastic source, like \Phi''+\frac{1+2\nu}{\tau}\Phi'+k^2\Phi=\lambda\psi(\tau) where we use prime to denote the derivative with \tau, \nu and \lambda are real constant parameter. how to get the green...

Why do almost all computer chips have green color? Like the RAM, microprocessor, motherboard are mostly of green color. Does this green color have any relation with the fact that chips are made of silicon i.e. are they green due to the presence of silicon? I've also seen brownish color...

Guys, how do u get the Fourier transform of a product of Greens Functions?I have to get Fourier transform of: G_{el}(k+q,\tau-\tau1)*G_{el}(k,\tau1) where \tau and \tau1 are two different times (\tau>\tau1) and q is phonon momentum and k is electron momentum... Thanks

The Earth rotates in inertial space. The amount of rotational kinetic energy is enormous ... millions of mankind's annual consumption. Is there any kind of apparatus, perhaps one based on gyros, that could tap into this energy?

Hi sorry if this is very basic, I am an animal final year student and have come across a problem for my dissertation. I am looking at wavelength of light. Now the question, is a green bulb purely giving off green light, ie if it more blue green is it giving of predonimantly light of around 500...

They don't look that way in the sky, but are there stars that look that way up close?

Green living[/color][/size] Interpret as you will. [SIZE="4"]Contest Rules: 1. Any digital photo or digitally-scanned photo relevant to the theme will be accepted within the contest period. In case there's a gray area, or you're not sure if the picture is suitable, check with me first...

Where can I find problems with Tiablikov Green functions: G(x,x';t,t')=\theta(t-t')<[\hat{\mathal{A}}(x,t),\hat{\mathal{B}}(x',t')]> Thanks!

is green better than red? Over the past couple of days, i seem to have noticed that sometimes, people like green better than red. I have been thinking about it and felt that it should be brought to discussion as to why green seems to be better. I know it sounds rather strange, but when you...

As Iran continues to develop nuclear power for peaceful purposes, many people have expressed concern that a nuclear weapons program might emerge. http://www.cfr.org/publication/16811/ President Obama has acknowledged they have a legitimate right to pursue peaceful energy development...

Hey, I was wondering if anybody knew a more intuitive, less axiomatic book that one could use as a companion text to the "green\papa" rudin? (Real and Complex Analysis). I am finding that it is possible to learn measure theory from this book, but it takes a lot of time and rigor. It might be...

I am a cabinet maker, and recently, I have had a lot of demand for E0, as they learn that Formaldehyde emissions from many building products are hazardous to your health. "Sources of Formaldehyde Pressed wood products (hardwood plywood wall paneling, particleboard, fiberboard) and...

Hello, I have a question for the astronomy people here. Last night I was outside around 10 P.M, and at one point I just happened to be staring up into the western sky when I saw one of the brightest, most beautiful meteors I have ever seen. The weird thing is that it had a faint green tint to...

I saw some green lasers on dealextreme recently, they have units that go up to 200 mW: http://www.dealextreme.com/details.dx/sku.1997 This thing looks a bit unsafe to me! My intention is to show the daughters some stars here in our polluted skies, not much else. How much power is needed for...

Does anyone know what sorts of opportunities are out there for CE's in Green Energy (such as solar and wind)?

Which engineers are working the most on sustainable energy such as wind, solar, and hydro? I'm guessing mechanical and electrical. Any other ones?

Homework Statement Of 27 students in a class, 11 have blue eyes, 13 have brown eyes, 3 have green eyes. If 3 students are chosen at random what are the odds of the following occurring? Only 1 has green eyes.Homework Equations Odds = P( s )/P( f ) = P( s )/( 1 - P( s )) Probability success = P(...

Homework Statement Monochromatic green light of wavelength 546 nm falls on a single slit with a width of 0.095 mm. The slit is located 75 cm from a screen. How wide will the central bright band be? Homework Equations D sin 0dark = m 入 The Attempt at a Solution Can...

Homework Statement what color does a green cloth appear in yellow light Homework Equations The Attempt at a Solution i know its either green or black but i don't know which. Yellow light is either a wavelength of its own or a mixture of green and red, that's where my problem is...

Basically I wanted to teach myself about light and I have a question that i am not to sure about basically I know about the spectrum of light but I also know that two primary colours make a secondary color. yellow is either is own wavelength or its a mixture of green and red, so here's my...

Homework Statement How many photon/s are emitted by a green light (λ= 500 nm) 60 W incandescent bulb? Assume an efficiency of 2%. Homework Equations c= wavelength(f) c=speed of light E=hf The Attempt at a Solution im not sure which equation to use here, i don't know what to...

Hello. I'm planning on building a green house in my garden with a wind powered heating element to help sustain higher temperatures. I live in a windy area (North Sotland) so wind prevolance is no problem. Would an element be the best way to this or are there better methods of converting...

This snapshot was sent to me from somewhere near the Cotton Bowl this morning. http://i210.photobucket.com/albums/bb29/jellyroll2008/friedtomatoes.jpg mmmm..MMM! I'd kill for some fried green tomaters.

[SIZE="5"][FONT="Arial Black"]Happy Birthday Borek!

Last night we had the most bright and beautiful sunset I ever saw look at the color of the clouds The start of a green flash? And later in the evening: