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What does rule of thumb means?
"Rule of Thumb" means a rule or principle that provides guidance to appropriate behavior.
What is the rule of thumb stating that if there are two explanations for a phenomenon?
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What is the octic rule?
The octet rule is a simple chemical rule of thumb that states that atoms tend to combine in such a way that they each have eight...
What is one geometry rule that the Greeks discovered do we still use today?
It is Pythagoras' theorem that is applicable to any right angle triangle.
What is the origin of 'rule of thumb'?
Rule of thumb comes from the days before standardised measuring units. The thumb is the most useful digit for measuring as it is similar to the distance that became "The Inch" (my thumb is about 2.5") It should be noted that because it is an arbitrary figure, that is my thumb is not the same size as your thumb, my hand made thingummy will not be the same size as your hand made thingummy but the two should be in proportion. the average value for Rule of thumb will vary from race to race as an aside the biblical measurement "The cubit" is the distance from the elbow to the tip of the longest finger. which will again vary from race to race. ----- also the earliest known written occurrence of the expression was in 1692 when it already meant some method or procedure based on practical experience & without any formal basis my guess is the expression referred originally to the natural measuring rule for gauging distance from any seen object which calls for holding a thumb out at arms length against the distant object & then multiplying by 10 the horizontal distance the thumb appears to jump when viewed from alternately blinking eyes & as suggested above there are a variety of almost as commonly applied measuring rules involving the thumb which perhaps compete with this rule or perhaps all together support it both in its figurative sense as a law or principle & in its earlier literal sense as a physical ruler or measuring device
When using the left hand rule for generator the thumb point in what dierction?
There is no left handed rule. The correct term is right handed rule. Using the right handed rule, your thumb is pointing in the direction of current flow, and your fingers are pointing in the direction of magnetic flux flow.
What is Maxwell right hand rule?
Ampere's right hand thumb rule states that if you hold the current carrying wire in your right hand so that your thumb points in the direction of the current, then the direction in which your fingers encircle the wire give you the direction of the magnetic lines of force around the wire .On reversing the direction of current in thewire , the direction of the magnetic lines of force is also reversed.
How do you determine Polarity of an electromagnet using the left hand rule?
Use the right hand rule. Take out your right hand, wrap your hand around the loop, your fingertips should curve to the direction of the wiring, that is, the current should be coming out from your wrist to your fingertip, and the direction of your thumb is the magnetic fieled produced. The thumb is N, and the other is S.Alternative AnswerThe left-hand 'grip' rule for determining the magnetic polarity of an electromagnet applies for ELECTRON FLOW current direction -i.e. current flow from negative to positive. Grasp the electromagnet with the curl of the fingers pointing in the same direction as the electron flow current, and the thumb will indicate the north pole end of the electromagnet.For CONVENTIONAL FLOW (positive to negative), we use the right-hand 'grip' rule instead.
How rigt hand thumb rule is used in determining the direction of magnetic field around a conductor carrying current?
Curl the fingers of your right hand into the palm and extend the thumb. The thumb indicates the direction of the current, and the direction of the fingers indicates the direction of the magnetic field.
What is the rule relating to the direction of the field due to the current in a wire?
The "Right Hand Rule" Put your right hand under the wire with your thumb sticking out and in the direction of the flow of the current (note that it is opposite to the direction of the movement of the electrons!) and close your fist; the fingers of the right hand will curl around in the direction of the magnetic field.
What is the right hand corkscrew rule in relation to coordinate systems?
I'm not familiar with the corkscrew analogy, but the right hand rule is a method for coordinate systems and cross products.Take your right hand and put out the thumb, index finger, and middle finger at right-angles to each other.Your index finger is the direction of the positive x axis.Your middle finger is the direction of the positive y axis.Your thumb is the direction of the positive z axis.So if you orient your hand like a regular x-y graph, with index (x) toward the right, and middle (y) pointing up, then your thumb (z) will be pointing straight at you.
Which law gives the direction of magnetic field due to a current carrying conductor?
The right hand rule. If you were to place your right hand around the conductor, with the thumb pointing in the direction of current flow, your fingers which are wrapped around the conductor will point in the direction of magnetic flux. Said another way, if you are looking at the end of the conductor and current is flowing towards you, then magnetic flux will be counter-clockwise.
What produce by the flow of electric charge from one area to another?
When electric charge flows from one place to another, it induces a magnetic field. The direction of the magnetic field is found by the right hand rule. To use the right hand rule, put your right hand into a fist with your thumb pointed up. When your point your thumb in the direction of the current, and the direction your fingers gives you the direction of the magnetic field.
How do you decide the 'Direction of Rotation' of a magnetic field?
There is a convenient rule called the "right hand grip rule":If you grip your right hand around the electric conductor with your thumb pointing in the direction the current is flowing, the magnetic field rotates in the direction your remaining fingers are pointing.See related Wikipedia link for an illustration.
What is right hand rule in geology?
There are two different right hand rules...American right hand rule: Looking to the strike direction, the bed dips to the right. In our example, that would fit with 000/45. So, looking to the north, the bed dips to the right, to 090 (east).British right hand rule: The thumb of the right hand indicates the dip direction, and the heal points to the strike direction. So in our example, we would record the orientation as 180/45. That is: Strike towards 180 (perfect south bearing), and dip of 45º towards 090.
What is the Flemings left hand rule?
The direction of force produced on a current-carrying conductor placed in a magnetic field can be determined by this rule. the thumb, forefinger and middle finger of the left hand mutually at right angles to each other, such that the forefinger is in direction of flux, and the middle finger is in a direction of current flow in the conductor, then the thumb indicates the direction of motion of the conductor.
What is motion using of right hand rule?
The answer is that 'it depends' what you mean by the 'right hand rule'!This is because Fleming's Right-Hand Rule applies to generator action if you are are using 'conventional flow' but to motor action if you are using 'electron flow'.So, for generator action, the 'motion' (indicated by the thumb) refers to the direction of the motion of a conductor through the magnetic field. For motor action, the 'motion' refers to the direction of the force applied to conductor within a magnetic field.
