DETERMALMO'S BLOG
Ampere's Law
The line integral of the magnetic
flux around a closed curve is proportional to the algebraic sum of electric
currents flowing through that closed curve; or, in differential form curl B
= J.
This was
later modified
to add a second term when it was incorporated into Maxwell's equations.
Archimedes' Principle
Avogadro's Hypothesis (1811)
Bernoulli's Equation
Biot-Savart Law
A law
which describes the contributions to a magnetic field by an electric current.
It is analogous to Coulomb's
law.
Boyle's Law (1662); Mariotte's law (1676)
Bragg's Law (1912)
The continuous random motion of solid microscopic particles when
suspended in a fluid medium due to the consequence of ongoing bombardment by
atoms and molecules.
A quantum mechanical effect, where two very large plates placed close to
each other will experience an attractive force, in the absence of other forces.
The cause is virtual particle-antiparticle pair creation in the vicinity of the
plates. Also, the speed of light will be increased in the region between the
two plates, in the direction perpendicular to them.
The principle that cause must
always preceed effect. More formally, if an event A ("the
cause") somehow influences an event B ("the effect")
which occurs later in time, then event B cannot in turn have an
influence on event A. That is, event B must occur at a later time
t than event A, and further, all frames must agree upon this
ordering.
A pseudoforce on an object when it is moving in
uniform circular motion. The "force" is directed outward from the
center of motion.
Charles' Law (1787)
Radiation emitted by a massive particle which is moving faster than light
in the medium through which it is traveling. No particle can travel faster than
light in vacuum, but the speed of light in other media, such as water, glass,
etc., are considerably lower. Cherenkov radiation is the electromagnetic
analogue of the sonic boom, though Cherenkov radiation is a shockwave set up in
the electromagnetic field.
The principle that a given system cannot exhibit both wave-like behavior
and particle-like behavior at the same time. That is, certain experiments will
reveal the wave-like nature of a system, and certain experiments will reveal
the particle-like nature of a system, but no experiment will reveal both
simultaneously.
An effect that demonstrates that
photons (the quantum of electromagnetic radiation) have momentum. A photon
fired at a stationary particle, such as an electron, will impart momentum to
the electron and, since its energy has been decreased, will experience a
corresponding decrease in frequency.
The total mass-energy of a closed system remains constant.
The total electric charge of a closed system remains constant.
The total linear momentum of a closed system remains constant.
The total angular momentum of a
closed system remains constant.
Constancy Principle
One of the postulates of A.
Einstein's special theory of relativity, which puts forth that the speed of light in vacuum is measured as the same speed to all observers,
regardless of their relative motion.
An equation which states that a
fluid flowing through a pipe flows at a rate which is inversely proportional to
the cross-sectional area of the pipe. It is in essence a restatement of the
conservation of mass during constant flow.
The idea, suggested by Copernicus,
that the Sun, not the Earth, is at the center of the Universe. We now know that
neither idea is correct.
Coriolis Pseudoforce (1835)
A pseudo force which arises because of motion relative to a frame of reference which is
itself rotating relative to a second, inertial frame. The magnitude of the
Coriolis "force" is dependent on the speed of the object relative to
the noninertial frame, and the direction of the "force" is orthogonal
to the object's velocity.
The principle that when a new,
more general theory is put forth, it must reduce to the more specialized (and
usually simpler) theory under normal circumstances. There are correspondence
principles for general relativity to special relativity and special relativity
to Newtonian mechanics, but the most widely known correspondence principle is
that of quantum mechanics to classical mechanics.
Coulomb's Law
The primary law for
electrostatics, analogous to Newton's law of universal
gravitation. It states that the force between two point charges is proportional
to the algebraic product of their respective charges as well as proportional to
the inverse square of the distance between them.
Curie's Law
Curie-Weiss Law
A more general form of Curie's Law, which states that the susceptibility of a paramagnetic
substance is related to its thermodynamic temperature T by the equation KHI = C/T - W, where W is the Weiss constant.
Dalton's Law of partial pressures
Waves emitted by a moving object as received by an observer will be
blueshifted (compressed) if approaching, redshifted (elongated) if receding. It
occurs both in sound as well as electromagnetic phenomena.
Dulong-Petit Law (1819)
The molar
heat capacity is approximately equal to the three times the ideal gas constant:
The cornerstone of Einstein's general theory of
relativity, relating the gravitational tensor G to the
stress-energy tensor T by the simple equation G = 8 pi T.
stress-energy tensor T by the simple equation G = 8 pi T.
The energy E of a particle is equal to its mass M
times the square of the speed of light c, giving rise to the best known physics
equation in the Universe: E = M c2.
The basic postulate of A. Einstein's general theory
of relativity, which posits that an acceleration is fundamentally
indistinguishable from a gravitational field.
Faraday's Law
Faraday's Laws of electrolysis
The amount of chemical change
during electrolysis is proportional to the charge passed.
The charge Q required to
deposit or liberate a mass m is proportional to the charge z of
the ion, the mass, and inversely proportional to the relative ionic mass M;
mathematically Q = F
m z / M,
An electromotive force is induced
in a conductor when the magnetic field surrounding it changes.
Faraday's second law of electromagnetic induction
The magnitude of the electromotive
force is proportional to the rate of change of the field.
The sense of the induced
electromotive force depends on the direction of the rate of the change of the
field.
The principle states that the path taken by a ray of
light between any two points in a system is always the path that takes the
least time.
Gauss' Law for magnetic fields
The magnetic flux through a closed
surface is zero; no magnetic charges exist; in differential form
div B = 0.
div B = 0.
When charged particles flow through a tube which has both an electric
field and a magnetic field (perpendicular to the electric field) present in it,
only certain velocities of the charged particles are preferred, and will make
it un-deviated through the tube; the rest will be deflected into the sides.
Hooke's Law
Huygens' Principle
An equation which sums up the ideal gas laws in one simple equation P V
= n R T,
Joule-Thomson Effect; Joule-Kelvin
Effect
Joule's Laws
The heat Q produced when a
current I flows through a resistance R for a specified time t
is given by Q = I2 R t .
The sum of the potential
differences encountered in a round trip around any closed loop in a circuit is
zero.
The sum of the currents toward a
branch point is equal to the sum of the currents away from the same branch
point.
Kohlrausch's Law
Lambert's Laws
The illuminance on a surface
illuminated by light falling on it perpendicularly from a point source is
proportional to the inverse square of the distance between the surface and the
source.
If the rays meet the surface at an
angle, then the illuminance is proportional to the cosine of the angle with the
normal.
The luminous intensity of light
decreases exponentially with distance as it travels through an absorbing
medium.
For steady-state heat conduction in one dimension, the temperature
distribution is the solution to Laplace's equation, which states that the second
derivative of temperature with respect to displacement is zero.
Lenz's Law (1835)
The ratio of the speed of an object in a given medium to the speed of
sound in that medium.
Mach's Principle (1870)
Gauss' law
The electric flux through a closed
surface is proportional to the algebraic sum of electric charges contained
within that closed surface; in differential form div E = rho, where
rho is the charge density.
Gauss' law for magnetic fields
The magnetic flux through a closed
surface is zero; no magnetic charges exist. In differential form div B =
0.
Faraday's law
The line integral of the electric
field around a closed curve is proportional to the instantaneous time rate of
change of the magnetic flux through a surface bounded by that closed curve; in
differential form curl E = -dB/dt,
The line integral of the magnetic field around a closed curve is proportional
to the sum of two terms: first, the algebraic sum of electric currents flowing
through that closed curve; and second, the instantaneous time rate of change of
the electric flux through a surface bounded by that closed curve; in
differential form curl H = J + dD/dt,.
Murphy's Law (1942)
Newton's Law of universal gravitation
Two bodies attract each other with
equal and opposite forces; the magnitude of this force is proportional to the
product of the two masses and is also proportional to the inverse square of the
distance between the centers of mass of the two bodies; F = (G m M/r2) e, where
m and M are the masses of the two bodies, r is the
distance between. the two, and e is a unit vector directed from the test mass
to the second.
Newton's Laws of motion
A body continues in its state of
constant velocity (which may be zero) unless it is acted upon by an external
force.
For an unbalanced force acting on
a body, the acceleration produced is proportional to the force impressed; the
constant of proportionality is the inertial mass of the body.
In a system where no external
forces are present, every action force is always opposed by an equal and
opposite reaction force.
Occam's Razor (1340)
Ohm's Law (1827)
Pascal's Principle
In a hierarchy, every employee tends to rise to his level of incompetence.
For a wavefront intersecting a reflecting surface, the angle of incidence
is equal to the angle of reflection, in the same plane defined by the ray of
incidence and the normal.
For a wavefront traveling through a boundary between two media, the first
with a refractive index of n1, and the other with one of n2,
the angle of incidence theta is related to the angle of refraction phi
by n1 sin theta = n2 sin phi.
The principle, employed by Einstein's relativity
theories, that the laws of physics are the same, at least qualitatively, in all
frames. That is, there is no frame that is better (or qualitatively any
different) from any other. This principle, along with the constancy
principle, constitute the founding principles of special relativity.
Stefan-Boltzmann Law
The
radiated power P (rate of emission of electromagnetic energy) of a hot
body is proportional to the radiating surface area, A, and the fourth
power of the thermodynamic temperature, T. The constant of
proportionality is the Stefan-Boltzmann constant. Mathematically P = e sigma A T4,.where
the efficiency rating e is called the emissivity of the object.
Superposition Principle
The general idea that, when a number of influences
are acting on a system, the total influence on that system is merely the sum of
the individual influences; that is, influences governed by the superposition
principle add linearly.
The change in internal energy of a
system is the sum of the heat transferred to or from the system and the work
done on or by the system.
The entropy -- a measure of the
unavailability of a system's energy to do useful work -- of a closed system
tends to increase with time.
For changes involving only perfect
crystalline solids at absolute zero, the change of the total entropy is zero.
If two bodies are each in thermal
equilibrium with a third body, then all three bodies are in thermal equilibrium
with each other.
A principle, central to quantum mechanics, which
states that two complementary parameters (such as position and momentum, energy
and time, or angular momentum and angular displacement) cannot both be known to
infinite accuracy; the more you know about one, the less you know about the
other.
Forces responsible for the non-ideal behavior of
gases, and for the lattice energy of molecular crystals. There are three
causes: dipole-dipole interaction; dipole-induced dipole moments; and
dispersion forces arising because of small instantaneous dipoles in atoms.
Wave-Particle Duality
Wiedemann-Franz Law
WISE
QUOTES
“Count your
age by friends, not years. Count your life by smiles, not tears.”
“The secret of life, though, is to fall seven times
and to get up eight times.”
“There is neither happiness nor misery in the world;
there is only the comparison of one state with another, nothing more. He who
has felt the deepest grief is best able to experience supreme happiness. We
must of felt what it is to die, Morrel, that we may appreciate the enjoyments
of life.
" Live, then, and be happy, beloved children of
my heart, and never forget, that until the day God will deign to reveal the
future to man, all human wisdom is contained in these two words, 'Wait and
Hope.”
“In a good bookroom you feel in some mysterious way
that you are absorbing the wisdom contained in all the books through your skin,
without even opening them.”
“The fool doth think he is wise, but the wise man
knows himself to be a fool.”
“Whenever you find yourself on the side of the
majority, it is time to pause and reflect.”
“The only way to get through life is to laugh your
way through it. You either have to laugh or cry. I prefer to laugh. Crying
gives me a headache.”
“Any fool can know. The point is to understand.”
“Knowing others is intelligence; knowing yourself is
true wisdom. Mastering others is strength; mastering yourself is true power. If
you realize that you have enough, you are truly rich.”
“It's a dangerous business, Frodo, going out your
door. You step onto the road, and if you don't keep your feet, there's no knowing
where you might be swept off to.”
“Don't Gain The World & Lose Your Soul, Wisdom Is Better Than Silver Or Gold.”
“Learn from the mistakes of others. You can never live long enough to make them all yourself.”
“The man of knowledge must be able not only to love his enemies but also to hate his friends.”
“Trees are poems the earth writes upon the sky, We fell them down and turn them into paper,
That we may record our emptiness.”
“We must be willing to let go of the life we planned so as to have the life that is waiting for us.”
“There are three things all wise men fear: the sea in storm, a night with no moon, and the anger of a gentle man.”
“You yourself, as much as anybody in the entire universe, deserve your love and affection”
“Sell your cleverness and buy bewilderment.”
“There are moments when troubles enter our lives and
we can do nothing to avoid them.
But they are there for a reason. Only when we have overcome them will we understand why they were there.”
But they are there for a reason. Only when we have overcome them will we understand why they were there.”
“The mouth is made for communication, and nothing is
more articulate than a kiss.”
“Nothing, Everything, Anything, Something: If you
have nothing, then you have everything, because you have the freedom to do
anything, without the fear of losing something.”
“The older I grow, the more I distrust the familiar
doctrine that age brings wisdom.”
“If you win, you need not have to explain...If you
lose, you should not be there to explain!”
“I’m not waiting until my hair turns white to become
patient and wise. Nope, I’m dyeing my hair tonight.”
“I think I've discovered the secret of life -- you
just hang around until you get used to it.”
“I’m not in this world to live up to your
expectations and you’re not in this world to live up to mine.”
"Just that," said the fox. "To me,
you are still nothing more than a little boy who is just like a hundred
thousand other little boys. And I have no need of you. And you, on your part,
have no need of me. To you I am nothing more than a fox like a hundred thousand
other foxes. But if you tame me, then we shall need each other. To me, you will
be unique in all the world. To you, I shall be unique in all the world....”
“Don't waste your time with explanations: people
only hear what they want to hear.”
“There comes a point when you either embrace who and
what you are, or condemn yourself to be miserable all your days. Other people
will try to make you miserable; don't help them by doing the job yourself.”
“We can know only that we know nothing. And that is
the highest degree of human wisdom.”
“The desire to reach for the stars is ambitious. The
desire to reach hearts is wise.”
“Anybody can look at a pretty girl and see a pretty
girl. An artist can look at a pretty girl and see the old woman she will
become. A better artist can look at an old woman and see the pretty girl that
she used to be. But a great artist-a master-and that is what Auguste Rodin
was-can look at an old woman, protray her exactly as she is...and force the
viewer to see the pretty girl she used to be...and more than that, he can make
anyone with the sensitivity of an armadillo, or even you, see that this lovely
young girl is still alive, not old and ugly at all, but simply prisoned inside
her ruined body. He can make you feel the quiet, endless tragedy that there was
never a girl born who ever grew older than eighteen in her heart...no matter
what the merciless hours have done to her. Look at her, Ben. Growing old
doesn't matter to you and me; we were never meant to be admired-but it does to
them.”
“You can search throughout the entire universe for
someone who is more deserving of your love and affection than you are yourself,
and that person is not to be found anywhere. You, yourself, as much as anybody
in the entire universe, deserve your love and affection.”
“Pain is a pesky part of being human, I've learned
it feels like a stab wound to the heart, something I wish we could all do
without, in our lives here. Pain is a sudden hurt that can't be escaped. But
then I have also learned that because of pain, I can feel the beauty, tenderness,
and freedom of healing. Pain feels like a fast stab wound to the heart. But
then healing feels like the wind against your face when you are spreading your
wings and flying through the air! We may not have wings growing out of our
backs, but healing is the closest thing that will give us that wind against our
faces.”
“Having children makes you no more a parent than
having a piano makes you a pianist.”
“Do you not see how necessary a world of pains and
troubles is to school an intelligence and make it a soul?”
“That's what real love amounts to - letting a person
be what he really is. Most people love you for who you pretend to be. To keep
their love, you keep pretending - performing. You get to love your pretence.
It's true, we're locked in an image, an act - and the sad thing is, people get
so used to their image, they grow attached to their masks. They love their
chains. They forget all about who they really are. And if you try to remind
them, they hate you for it, they feel like you're trying to steal their most
precious possession.”
“Death is no more than passing from one room into
another. But there's a difference for me, you know. Because in that other room
I shall be able to see.”
“Sometimes, if you stand on the bottom rail of a
bridge and lean over to watch the river slipping slowly away beneath you, you
will suddenly know everything there is to be known.”
“The more I read, the more I acquire, the more
certain I am that I know nothing.”
“It is unwise to be too sure of one's own wisdom. It
is healthy to be reminded that the strongest might weaken and the wisest might
err.”
“We shall not cease from exploration and the end of all our exploring will be to arrive where we started
and know the place for the first time.”
and know the place for the first time.”
“A wise man will make more opportunities than he
finds.”
“Never complain, never explain. Resist the
temptation to defend yourself or make excuses.”
“Whenever I hear anyone arguing for slavery, I feel
a strong impulse to see it tried on him personally.”
“Nowadays most people die of a sort of creeping
common sense, and discover when it is too late that the only things one never
regrets are one's mistakes.”
“Yesterday I was clever, so I wanted to change the
world. Today I am wise, so I am changing myself.”
“The public have an insatiable curiosity to know
everything, except what is worth knowing.”
“In youth, it was a way I had, to do my best to please. And change, with every passing lad
To suit his theories. But now I know the things I know and do the things I do, and if you do not like me so, to hell, my love, with you.”
To suit his theories. But now I know the things I know and do the things I do, and if you do not like me so, to hell, my love, with you.”
“It is wise to direct your anger towards problems --
not people; to focus your energies on answers -- not excuses.”
“When a child asks you something, answer him, for
goodness sake. But don't make a production of it. Children are children, but
they can spot an evasion faster than adults, and evasion simply muddles 'em.”
“For everything in this journey of life we are on,
there is a right wing and a left wing: for the wing of love there is anger; for
the wing of destiny there is fear; for the wing of pain there is healing; for
the wing of hurt there is forgiveness; for the wing of pride there is humility;
for the wing of giving there is taking; for the wing of tears there is joy; for
the wing of rejection there is acceptance; for the wing of judgment there is
grace; for the wing of honor there is shame; for the wing of letting go there
is the wing of keeping. We can only fly with two wings and two wings can only
stay in the air if there is a balance. Two beautiful wings is perfection. There
is a generation of people who idealize perfection as the existence of only one
of these wings every time. But I see that a bird with one wing is imperfect. An
angel with one wing is imperfect. A butterfly with one wing is dead. So this
generation of people strive to always cut off the other wing in the hopes of
embodying their ideal of perfection, and in doing so, have created a crippled
race.”
“Develop
an attitude of gratitude, and give thanks
for everything that happens to you, knowing that every step forward is a
step toward achieving something bigger and better than your current
situation.”
“Relationships are set up to be imperfect. They are
designed by the master creator of relationships to be flawed, to be forever
inadequate, and to be a work of art.”
“Wisdom is the ability to make wise decisions and
pursue them. The bible said "wisdom is the principal thing". This
means it's the number one thing ever that you cannot bypass and expect to
succeed!”
“the longing for wisdom itself is wisdom' - 'search for a
fixed point within yourself, my child, that the world cannot reach' - regard
everything that happens as a lifeless painting and do not let yourself be
touched by it,”
“When you are able to know the right thing, you are
intelligent. But when you choose that right thing to do, you are wise. This
means people can get money, education, marriage, and good health and not get
wisdom. Wisdom is the number one gift for a Godly success.”
“The Christian does not avoid sin to achieve salvation, but
rather salvation brings him to a desire not to sin. The closer that one's
spirit is synchronized with the holy knowledge of God, the more he comprehends
how and why sin is destructive to himself and others in each and every
circumstance. The dwindling desire for sin is a premature gift of Heaven -
where there will be no sin, where all will, too, possess that full and complete
wisdom; all will have perfect reasons not to sin. In this way, free will might
still exist, but the shared wisdom of God will simply outwit all desires,
impulses, and needs to sin.”
“The real madness probably is not another thing that the
wisdom itself that, tired of discovering the shames of the world, has taken the
intelligent resolution to become mad”
“Till they arrived no other lives had been lived here. It made the air that much thinner, harder to breathe. She had not understood, till she came to a place where it was lacking, the extent to which her sense of the world had to do with the presence of those who had been there before, leaving signs of their passing and spaces still warm with their breath - a threshold worn with the coming and going of feet, hedges between fields that went back a thousand years, and the names even further; most of all, the names on headstones, which were their names, under which lay the bones that had made their bones and given them breath.”
“Till they arrived no other lives had been lived here. It made the air that much thinner, harder to breathe. She had not understood, till she came to a place where it was lacking, the extent to which her sense of the world had to do with the presence of those who had been there before, leaving signs of their passing and spaces still warm with their breath - a threshold worn with the coming and going of feet, hedges between fields that went back a thousand years, and the names even further; most of all, the names on headstones, which were their names, under which lay the bones that had made their bones and given them breath.”
No comments:
Post a Comment