Know : List of Letters used in Science and Mathematics

Note: This list can be expanded further.greekAlphabet

Å — angstrom

Aampere, area, a blood type, a spectral type, vector potential, Work

BB meson, a blood type, boron, luminance, magnetic field, a spectral type

Ccarbon, degrees Celsius, set of complex numbers, coulomb, molar heat capacity, the C programming language, specific heat capacity, Cunningham correction factor

Ddeuterium, differential operator, electric displacement, D meson

Eelectric field, energy, SI prefix exa–, expected value

F — degrees Fahrenheit, farad, fluorine, force, Helmholtz free energy, a spectral type

GEinstein tensor, SI prefix giga–, Gibbs free energy, gravitational constant, Green’s function, Momentum, a Spectral type

Hauxiliary magnetic field, enthalpy, Hamiltonian, Hankel function, Heaviside step function, henry, Higgs boson, homology group, Hubble constant, hydrogen, set of quaternions, hat matrix

Icurrent, iodine, impulse, luminous intensity, moment of inertia

Jangular momentum, Bessel function of the first kind, current, joule

Kkaon, kelvin, potassium, sectional curvature, a spectral type

Langular momentum, inductance, Lagrangian, litre, a spectral type

Mmagnetization, mass, SI prefix mega–, a spectral type, torque

NAvogadro’s number, Bessel function of the second kind, set of natural numbers, newton, nitrogen, normal distribution, normal vector

Obig O notation, a blood type, oxygen, a spectral type

PLegendre polynomial, luminous flux, phosphorus, polarization, power, pressure, probability, projection

Qelectric charge, quantity of heat, set of rational numbers, flow rate

Rcurvature tensor, electrical resistance, radius, set of real numbers

Sarea, entropy, siemens, sphere, spin operator, sulfur, symmetric group

T — a spectral type, temperature, tesla, tritium

Upotential energy, uranium, unitary operator

Vpotential energy, vanadium, volt, voltage, volume

Wenergy, Lambert’s W function, tungsten, watt, W boson, Work, work function, Wiener process

Xrandom variable, abscissa

YBessel function of the second kind, SI prefix yotta, yttrium, ordinate, luminance

Zatomic number, impedance, set of integers, partition function (statistical mechanics), partition function (quantum field theory), Z boson, SI prefix zetta–, altitude


aSI prefix atto–, acceleration, reflectance

bBottom quark

cSI prefix centi–, Charm quark, speed of light, speed of sound

dSI prefix deci–, distance, Down quark, infinitesimal increment, differential operator

eNapier’s constant, electron, positron, electric charge

fSI prefix femto–, frequency

ggram, gravitational acceleration, gravitational field, distance metric of spacetime

hheight, hour, Planck’s constant, spherical Hankel function

iimaginary complex unit, imaginary quaternion unit, unit vector, current, row index

jelectric current and current density, radiant intensity, spherical Bessel function of the first kind, unit vector, column index, imaginary complex unit, imaginary quaternion unit

kBoltzmann constant, imaginary quaternion unit, SI prefix kilo–, wave vector, unit vector

llength, litre, mean free path

mmagnitude, mass, SI prefix milli–, metre, minute

nSI prefix nano–, neutron, refractive index, spherical Bessel function of the second kind

osmall o notation

pelectric dipole moment, momentum, SI prefix pico-, proton, point of a space

qelectric charge, generalized coordinate

rposition (vector), radial polar coordinate, radius

ssecond, Strange quark

tperiod, time, Top quark

uUp quark

vvelocity

wvelocity

xabscissa, real-valued argument, variable to be determined, vector,

yordinate, SI prefix yocto-, pixel row index

zcomplex variable, altitude, SI prefix zepto-

Greek

ΒBeta function

ΓAngular momentum, Gamma function, Christoffel symbols

Δ — A macroscopic change in the value of a variable, Laplace operator, Delta particle

ΘHeaviside step function

ΛIwasawa algebra, Lorentz transformation, Lambda Hyperon

Ξ — Cascade Hyperon

ΠProduct

ΣSum, Surface, Sigma Hyperon

Φ — Alternative symbol for Quantum mechanical wavefunction

ΨQuantum mechanical wavefunction

ΩChaitin’s constant, Ohm, Solid angle, Omega Hyperon


αAlpha particle, Fine structure constant, Angular acceleration

βBeta particle, Inverse temperature

γEuler-Mascheroni constant, Gamma-ray (Photon), Photon, Relativistic gamma factor

δDirac delta function, Infinitesimal quantity, Kronecker delta

εInfinitesimal quantity, Permittivity

ζDamping Ratio, Riemann zeta function

ηDistance metric of flat spacetime, Efficiency, Dynamic viscosity, η-meson

θAngle, Angular polar coordinate, Temperature

ι

κGravitational constant

λHalf-life, Lagrangian multiplicator, Lambda expression, Thermal conductivity, Wavelength

μAbsorption coefficient, Chemical potential, Magnetic dipole moment, Mean, SI prefix micro–, Micron, Muon, Permeability, Reduced mass

νFrequency, Kinematic viscosity, Neutrino

ξRiemann Xi function

ο

πFundamental group, Conjugate momentum, Homotopy groups, Number π, Pion, Prime-counting function, Projection

ρDensity, Electrical resistivity, Radial polar coordinate, ρ-meson

σCross section, Electrical conductivity, Spin, Standard deviation, Stefan-Boltzmann constant

τTau lepton, Torque, Shear stress, Time constant

υ

φAngular polar coordinate, Electric potential, Euler’s totient function, Golden mean, Phase, Potential energy

χElectric susceptibility

ψQuantum mechanical wavefunction, J/ψ particle

ωFrequency (in radian/s), angular velocity

ШTate-Shafarevich group (Ш(G))

Cardinality of infinite sets

בCardinality of infinite sets

Partial derivative

Del operator, Gradient, Divergence, Curl

Creativity : 2500 Balloons Godzilla

This sculpture probably one of the lightest in the world compared to its giant size. A Baloon Godzilla was made by Joey and Alexandra Evans of Evans Entertainment. They made this 25 feet long, 13 feet high Godzilla with approximately 2500 balloons! During the convention itself, Their project leads got to meet Haruo Nakajima and Akira Takarada, actors in the original Godzilla movies. They thanked their team for working so hard on the sculpture, bowed low and asked to have their picture taken with it.

Some of the pictures are shared here, you can look at the making here on the original post. You can follow them on Facebook here.2500 Baloon Godzilla (9)


Courtesy : www.Evansmagic.com

Know : Triangle, Square, Pentagon… How long it goes?

Triangle Δ (3), Square (4), Pentagon (5), Hexagon (6), Heptagon(7), Octagon(8)… How long it can go?

A Megagon is a shape with 1,000,000 equal sides.  Even if drawn at the size of the Earth, a regular megagon would be very difficult to distinguish from a circle.

regular polygon is a polygon that is equiangular (all angles are equal in measure) and equilateral (all sides have the same length). 

How many you know before? How to draw a perfect polygon with 10 sides? Know more here… (To see how to draw them? Scroll down the table)

Number of sides Name of polygon Picture
n Regular n-gon
3 Equilateral Triangle  Triangle.Equilateral.svg
4 Square  Regular polygon 4 annotated.svg
5 Regular Pentagon  Regular polygon 5 annotated.svg
6 Regular Hexagon  Regular polygon 6 annotated.svg
7 Regular Heptagon  Regular polygon 7 annotated.svg
8 Regular Octagon  Regular polygon 8 annotated.svg
9 Regular Nonagon  Regular polygon 9 annotated.svg
10 Regular Decagon Regular polygon 10 annotated.svg 
11 Regular Hendecagon  Regular polygon 11 annotated.svg
12 Regular Dodecagon  Regular polygon 12 annotated.svg
13 Regular Tridecagon  Regular polygon 13 annotated.svg
14 Regular Tetradecagon Regular polygon 14 annotated.svg 
15 Regular Pentadecagon  Regular polygon 15 annotated.svg
16 Regular Hexadecagon  Regular polygon 16 annotated.svg
17 Regular Heptadecagon Regular polygon 17 annotated.svg 
18 Regular Octadecagon  Regular polygon 18 annotated.svg
19 Regular Enneadecagon Regular polygon 19 annotated.svg 
20 Regular Icosagon  Regular polygon 20 annotated.svg
100 Regular Hectagon Internal Angle 176.40°External Angle 3.60°
1000 Regular Chiliagon  Chiliagon.pngA whole regular chiliagon is not visually discernible from a circle. The lower section is a portion of a regular chiliagon, 200 times as large as the smaller one, with the vertices highlighted.Internal Angle = 179.64°
10000 Regular Myriagon  Internal Angle = 179.96°
1,000,000 Regular Megagon  Circle - black simple.svgEven if drawn at the size of the Earth, a regular megagon would be very difficult to distinguish from a circle.Internal Angle = 179.99964°

Geometric Construction of Regular Polygons

Equilateral Triangle Inscribed in a Circle.gif

Equilateral triangle


 

File:Straight Square Inscribed in a Circle 240px.gif

Square


 

File:Regular Pentagon Inscribed in a Circle 240px.gif

Pentagon


 

Hexagon


 

Approximated Heptagon Inscribed in a Circle.gif

Heptagon


 

File:Regular Octagon Inscribed in a Circle.gif

Octagon


 

Approximated Nonagon Inscribed in a Circle.gif

Nonagon


 

Construction of a regular decagon

Decagon


 

Costruzione approssimata dell'endecagono regolare

Hendecagon


 

Regular Dodecagon Inscribed in a Circle.gif

Dodecagon


 

File:Approximated Tridecagon Inscribed in a Circle.gif

Tridecagon


 

Approximated Tetradecagon Inscribed in a Circle.gif

Tetradecagon


 

Regular Pentadecagon Inscribed in a Circle.gif

Pentadecagon


 

Regular Hexadecagon Inscribed in a Circle.gif

Hexadecagon


 

Regular Heptadecagon Using Carlyle Circle.gif

Heptadecagon


 

Octadecagon


 

Enneadecagon


 

Regular Icosagon Inscribed in a Circle.gif

Icosagon


Courtesy : Wikipedia ( All copyrights of the above images and animations belongs to the respective owners as mentioned in Wikipedia, shared here for educational purposes only)

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Documentary : People who Outsmart Computers

Daniel Tammet (born 31 January 1979 as Daniel Paul Corney) is an English writer, essayist and autistic savant. Tammet has been studied repeatedly by researchers in Britain and the United States, and has been the subject of several peer-reviewed scientific papers. 

Mental calculators are people with a prodigious ability in some area of mental calculation, such as multiplying large numbers or factoring large numbers. Some rare mental calculators are autistic savants, with a narrow area of great skill and poor mental development in other directions, but many are people of normal mental development who have simply developed advanced calculating ability. A good many are also experienced scientists, linguists, writers, and so on.