What is the blind spot? What is negative feedback?
477984
The blind spot is a part that you are unable to see, ie:  parts that are outside your peripheral vision.\n\nNegative feedback can mean many things depending on what subject the question is from.
329439
Ha!  I know just what you mean.  Basically a reflective surface reflects everything and most everything is visible depending on your position in relation to the object.  For example, an object held behind your back can be seen by a person standing in front of you if they change their position slightly.  It is a fascinating and wonderful phenomenon.
1106171
I can't remember exactly which of the theories it is (Young-Helmholtz trichromatic theory or the opponent-process theory), I believe it's the opponent-process theory that explains it though. I'd have to do some figuring to explain it further since that was in the beginning of my AP Psych course.
248915
The limit as sky goes to zero from the positive direction would be ground.\nLim    = ground\nsky-->0+\n\nThe limit as sky goes to zero from the negative direction is space.\nLim    = space\nsky-->0-\n\nSince the limit from the + site does not equal the limit from the - side, the limit does not exist.
1134207
to  help you about what??what reflection are you talking about???
500216
Dead Spot - An area where destructive waves interference occurs to such an extent that the net effect is zero sound energy in the area.
170486
a example of Negative feedback ais when you are running you build heat and you sweat beacuse the body wants to cool down and get back to 98.6 degs. That why you sweat along time after you run and another example is when you get sick the body raise the tempiture of your body to kill the virus or bactraca in order to go back to homestasis one more is when you are cold your body shivers. that's the boay's way to back to homeostasis.\n\na example of positive feedback is when woman is going to give birth her body push and push the baby out of her going futher and futher from homeostasis.
265230
dust\nDon't use a mirror to look at a laser. don't use anything to look at a laser unless you know what you are doing. not even one of those 'meeting pointers'. it could very easily damage your eye and cause blindness. don't even shine a laser at an object that is not intended to receive laser energy. you could crash a plane or hurt or kill someone else.
123514
1. The blind spot from the left eye is compensated for by the right eye, and vice-versa\n\n2. Your brain eliminates the blind spots from your vision\n\n3. There are fewer light sensitive cells on the retina at the blind spot because that is where the nerves collect together to exit the eye.\n\n4. The blind spots get bigger with increasing age. \n\n5. The blind spots offset in your eyes, closer to the center of your face than the center of your vision.\n\n6. Your brain fills in a the blind spot with a blank spot of the same color as the surrounding area.
312126
It's all in fun...lighten up or turn off your computer.If a dumb question is asked,like "how do blind people know when they are done wiping"..yes ,one of my better questions..wink...I do expect dumb and silly and perhaps insulting answers.\nAnd yes...I like the points
249872
a. having both positive and negative end
664071
Homeostasis basically relies on negative feedback mechanisms: if there is a deviation from the norm, eg an increase in blood glucose level, this will set in effect a chain of events that will bring the level back to the norm, at which point the lack of the original deviation switches off the events originally put into place, hence its called NEGATIVE feedback.
768138
No.  An effective manager will provide positive and negative feedback.  However, the negative feedback should be constructive, not just "You suck at x, y, and z."  Employees need to know what is good and what is bad regarding their work.  If they never heard the negative side, they would never know what needs improving.
214510
I got this from wikipedia:\n\nIn biological systems such as organisms, ecosystems, or the biosphere, most parameters must stay under control within a narrow range around a certain optimal level under certain environmental conditions. The deviation of the optimal value of the controlled parameter can result from the changes in internal and external environments. A change of some of the environmental conditions may also require change of that range to change for the system to function. The value of the parameter to maintain is recorded by a reception system and conveyed to a regulation module via an information channel.\n\nBiological systems contain many types of regulatory circuits, among which positive and negative feedbacks. Positive and negative don't imply consequences of the feedback have positive or negative final effect. The negative feedback loop tends to slow down a process, while the positive feedback loop tends to accelerate it.\n\nFeedback and regulation are self related. The negative feedback helps to maintain stability in a system in spite of external changes. It is related to homeostasis. Positive feedback amplifies possibilities of divergences (evolution, change of goals); it is the condition to change, evolution, growth; it gives the system the ability to access new points of equilibrium.\n\nFor example, in an organism, most positive feedbacks provide for fast autoexcitation of elements of endocrine and nervous systems (in particular, in stress responses conditions) and play a key role in regulation of morphogenesis, growth, and development of organs, all processes which are in essence a rapid escape from the initial state. Homeostasis is especially visible in the nervous and endocrine systems when considered at organism level.\n\n\n\n\nI think what you may be looking at is interaction... essentially, this is when information is both taken from the outside and used to influence neural events, and when neural knowledge is used to act upon outside events. For example, interaction in the visual system would be looking at a flower: your eyes are giving you information about it's shape, colour, etc., while at the same time your brain is recalling what a flower should look like and analysing the context to give you clues. With both these types of information you are able to deduce that it a flower.\n\nThis is in comparison with feed-forward processing that would only use context/recall clues, and feedback processing that only would analyse the shape/colour of the flower.\n\nHope that help somehow!
294534
Locate the Aargon Blackbox demo. I downloaded this demo from the internet a few years ago when we studied optics. It is a great game where the kids are given an input location for a laser and based on the output location they have to discover where mirrors, lenses, etc are located. It is lots of fun.
99482
It is blind\nIt is a spot.
252815
Feedback is essentially the noise of an amplifier amplifying the noise of itself.\n\nThe only way to remove the feedback is to experiment with speaker position, microphone position or position of guitar pickup.\n\nYou could also try turning the amp volume right down and then increasing the volume gradually back up until you hit the feedback and then jiggling the position of the speakers/mic/guitar pickup.\n\nTry putting the guitar amps off to one side and the vocal/PA cabs a bit further out to the side.  Keep your mics behind the vocal/PA speakers.