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Watt-seconds, or joules, is a measure of the power output of a flash unit. Usually, only studio lighting equipment is of sufficient power to be rated this way, and the numbers are best used to compare one unit with another as opposed to relating to the subject matter. Since they are often used with reflectors of all sorts, I personally wouldn't make a connection with a rating and the subject matter at hand. Lumens, which can be measured by a light meter at the subject's position, would be a more meaningful measurement. However, I would not be too concerned with Lumens either, preferring to rely on the meter reading expressed as an F number and shutter speed combination as long as I had tested all the equipment first.
What else can I help you with?
What is a subject matter?
Subject matter is what an art work has been created about. For example if you were to have a painting of a cow, then the subject matter is a cow.
What is the subject matter of Picasso's 'Weeping Woman'?
The subject matter is Dora Maar weeping.
What is the subject matter of the 'Dove of Peace'?
The subject matter is a dove of peace! It is a symbol for peace.
What is the subject matter in Campbell Soup cans?
The subject matter is Campbell Soup cans. Do not complicate art!
What was Picasso subject matter?
Subject matter refers to an area of interest a person has. Picasso's subject matter was art, more specifically painting.
What is the relationship between learner and subject matter?
The learner learns the subject matter
What is the relationship between the amount of space between particles and the state of the matter?
As the space changes between the particles, so does the state of matter.
What is the relationship between heat and the state of matter?
I think that the relationship between Heat and matter is that they both can be seen, both measured, both exists. Those are just some similarities.
What is the study of the relationship between matter and energy called?
The study of the relationship between matter and energy is called physics. This field explores how matter and energy interact and influence each other in various phenomena and systems in the universe.
What is the relationship between energy and matter?
The relationship between energy and matter is that they are interconnected and can be converted into each other. Matter contains energy in the form of particles, and energy can be released or absorbed during chemical reactions or nuclear processes involving matter. This relationship is described by Einstein's famous equation, Emc2, which shows that energy (E) and matter (m) are interchangeable.
Who developed the formula for the relationship between matter and energy?
Albert Einstein
Albert Einstein discovered the mathematical relationship between?
matter and energy
What describes the relationship between energy and matter?
Albert Einstein in 1905
The relationship between the mass of a material and its volume?
A property of matter called "density".
differences between themes and subject matter?
im not shor
Is lighting matter or energy?
Energy
The mathematical relationship between matter and energy E mc2 was discovered by?
Albert Einstien
