On Stage Lighting How does the lighting on stage effect the audience?
like when its darker or lighter... Maybe different color lighting. What kind of emotions does that bring out in the audience? Im working on my expo and i need help.
Intensity
Measured in lux, lumens and foot-candles. For any given luminaire (lighting instrument or fixture), this depends upon the power of the lamp, the design of the instrument (and its corresponding efficiency), the presence or absence of colour gels or gobos, distance from the area to be lit and the beam or field angle of the fixture, the colour and substance to be lit, and the neuro-optics of the total scene (that is, the relative contrasts to other regions of illumination). Color temperature is measured in Kelvin, and gel colours are organized by several different systems maintained by the color manufacturing companies. The apparent colour of a light is determined largely by the gel colour given it, but also in part by the power level the lamp is being run at and the colour of material it is to light.[5] As the percentage of full power a lamp is being run at drops, the tungsten filament in the bulb glows orange instead of more nearly white. This is known as amber drift or amber shift. Thus a 1000-watt instrument at 50% will appear far more orange than a 500-watt instrument at full.LED fixtures create colour through additive colour mixing with red, green, and blue LEDs at different intensities. This type of colour mixing is also used frequently with borderlights and cyclorama lights to create different colours on stage and on the cyclorama. Another form of colour mixing is CMY, or subtractive colour mixing. Cyan, magenta and yellow dichroic filters are used in different percentages to create different colours. Because it is often difficult to create true reds and greens, a green dichroic filter is often added to fixtures using this method of colour mixing.A gobo of this shape in a fixture with a red gel would produce a pattern like the one shown to the right. Pattern refers to the shape, quality and evenness of a lamp's output. The pattern of light an instrument makes is largely determined by three factors. The first are the specifics of the lamp, reflector and lens assembly. Different mounting positions for the lamp (axial, base up, base down), different sizes and shapes of reflector and the nature of the lens (or lenses) being used can all affect the pattern of light. Secondly, the specifics of how the lamp is focused affect its pattern. In ellipsoidal reflector spotlights (ERS) or profile spotlights, there are two beams of light emitted from the lamp. When the cones of both intersect at the throw distance (the distance to the stage), the lamp has a sharply defined 'hard' edge. When the two cones do not intersect at that distance, the edge is fuzzy and 'soft'. Depending on which beam (direct or reflected) is outside the other, the pattern may be 'thin and soft' or 'fat and soft.' Lastly, a gobo or break up pattern may be applied to ERSs and similar instruments. This is typically a thin sheet of metal with a shape cut into it. It is inserted into the instrument near its aperture. Gobos come in many shapes, but often include leaves, waves, stars and similar patterns.many stage lights hung on a batten focused in several directionsFocus is a term usually used to describe where an instrument is pointed. The final focus should place the "hot spot" of the beam at the actor's head level when standing at the center of the instrument's assigned "focus area" on the stage. Position refers to the location of an instrument in the theater's fly system or on permanent pipes in front-of-house locations. Hanging is the act of placing the instrument in its assigned position. In addition to these, certain modern instruments are automated, referring to motorized movement of either the entire fixture body or the movement of a mirror placed in front of its outermost lens. These fixtures and the more traditional follow spots add Direction and Motion to the relevant characteristics of light. Automated fixtures fall into either the moving head or moving mirror / scanner category. Scanners have a body which contains the lamp, PCBs, transformer, and effects (color, gobo, iris etc.) devices. A mirror is panned and tilted in the desired position by pan and tilt motors, thereby causing the light beam to move. Moving head fixtures have the effects and lamp assembly inside the head with transformers and other electronics in the base or external ballast. There are advantages and disadvantages to both. Scanners are typically faster and less costly than moving head units but have a narrower range of movement. Moving head fixtures have a much larger range of movement as well as a more natural inertial movement but are typically more expensive.The above characteristics are not always static, and it is frequently the variation in these characteristics that is used in achieving the goals of lighting.Stanley McCandless was perhaps the first to define controllable qualities of light used in theater. In A Method for Lighting the Stage, McCandless discusses color, distribution, intensity and movement as the qualities that can be manipulated
Light Therapy- An Effective Remedy For Seasonal Affective Disorder (Sad)
Light, like every other thing in this world, is meant for a purpose; not only is it the indirect source of providing essential nutrients to our body but has also been researched to be a major factor affecting our mental well-being. Human moods are said to be very well influenced by the impact of sunlight. The glee on every other person's face on a bright sunny day after prolonged cold days is no surprise. It comes in naturally and has been the subject of study by many medical practitioners since ages.
Light deprivation is usually experienced by people living in areas where the nights are longer and colder than the days. Statistics show that as much as 10% of the population in the north show symptoms of lethargy or lassitude due to the lack of exposure to sunlight. Moreover it has also been found out that women as compared to men are more likely to get affected by almost a 3:1 ratio1. When at a milder stage, light deprivation can be termed as ''Winter Blues''; a condition that results in restrained energy levels, depression and slower reflex actions. Not that the list ends over here, but the incremented cravings for sweet and carbohydrate rich foods makes the patient put on weight, hence adding up to the complexities. A more pronounced form of the just mentioned condition is what we term as Seasonal Affective Disorder aka SAD. With double the level of depression, it is usually accompanied by lack of concentration and even memory loss!
But as the adage goes, ''Necessity is the mother of invention''; there arose the need of producing artificial light, as much effective as the full spectrum sunlight, to serve people being deprived of the natural blessing and useful light boxes came into being! What a light box or more specifically a light therapy box does is that it mimics outdoor sunlight in a way that it contains high output fluorescent bulbs, shielded by a filter that acts as a UV light protector. The light box is then positioned carefully so that it is tilted and placed a little above your eyes, minimizing any unpleasant glare. The patient is then exposed to this artificial light for a time duration that depends on the demand and lifestyle of the affected person. Usually for a beginner, a 15-20 minutes' exposure is said to be enough, however the span may be extended when needed.
Light from a light box when hits the retina in the eye, gives the brain a stimulus to release certain ''active hormones'' that bring about a biochemical change in the body lifting your mood and reducing the symptoms of SAD. Not only does light therapy aid in resolving core SAD issues, it improvises one's wake-sleep cycle as well. This add-on benefit has its' roots lying in the research made by scientists that SAD is related to an imbalance in the body's natural circadian rhythms or the body's inner clock. The latter term is responsible for governing the timing of our sleep. Hence when we repeatedly try to sleep out of sync with our circadian rhythm, depression occurs; a continued condition like this might even lead to SAD. Light therapy, however, alleviates every affected person of such prevailing conditions.
To sum up, Light therapy is a simple, effective and medically recognized way to beat these symptoms and live a normal, healthy life.
Allen Anderson is a content writer at TrophySkin.com. Trophy Skin provides BlueMD, one of the best light therapy products for acne treatment. It provides a powerful, safe, effective and affordable blue light therapy which is approved by FDA and the American Academy of Dermatology.
“Be aware that Halogens require to be operated at or above a specific temperature such that the Halogen cycle is operative”
This is perfectly true, but that feature is built-in (one reason they are particularly bright), so I'm not quite sure what point you're making.
They certainly give a lovely light. They are widely used in stage lighting, where you need power and an even spectrum. LED's can be used for colour mixing, but are generally too feeble, and CFL's don't feature at all.
Hussey is in great touch and missing him in the WC is a great blow. Australia certainly will miss his experience. However, including him in the hope that he would be able to play for the last part of the tournament would be a big risk. Again its not fair for a youngster like Ferguson if Hussey was picked.
Not to mention CA selection committee already are in tremendous pressure following Ashes defeat. They will play it safe and wont take any risk at this moment.
Jim
“Be aware that Halogens require to be operated at or above a specific temperature such that the Halogen cycle is operative”
This is perfectly true, but that feature is built-in (one reason they are particularly bright), so I'm not quite sure what point you're making.
They certainly give a lovely light. They are widely used in stage lighting, where you need power and an even spectrum. LED's can be used for colour mixing, but are generally too feeble, and CFL's don't feature at all.
Hussey is in great touch and missing him in the WC is a great blow. Australia certainly will miss his experience. However, including him in the hope that he would be able to play for the last part of the tournament would be a big risk. Again its not fair for a youngster like Ferguson if Hussey was picked.
Not to mention CA selection committee already are in tremendous pressure following Ashes defeat. They will play it safe and wont take any risk at this moment.