ASCII/HEX/HTML table

ascii hex dec oct bin html

The whole set of 127 ASCII characters. Table shows decimal (DEC), hexadecimal (HEX), octal (OCT) and binary (BIN) indexes, but also HTML entities (in 3 different formats), ANSI-C entities and ASCII descriptors.

Table shows acoustic impedance of various mediums such as air, water or marble.

Application of radioisotopes

isotopes↔radioactivity↔medicine↔carbon dating c14↔smoke sensor↔etc.

Table shows example usage of selected radioisotopes.

Table shows average and minimum monthly salary and hour rate (gross), that the employer must guarantee to the employee in Poland. Both current and historical rates are presented.

Average wages over the world

average wage↔countries comparison

Table shows average wages (earnings) in different countries. Both annual and monthly incomes are presented

Basic physical and chemical constants

elementary charge↔speed of light↔Planck's constant↔vacuum permittivity↔etc.

Table shows common constants used in physics and chemistry.

Binary prefixes

kibi↔mebi↔gibi↔tebi etc.

Binary prefixes - kibi, mebi, gibi, tebi etc.

Boiling point

boiling↔liquefaction↔temperature↔liquid-gas change↔etc.

Tables show boiling points of various chemical substances. You see name and chemical formula next to temperature converted to the unit of your choice (Celsius deegres, kelvins, Fehrenheits degrees etc.)

Bond energy

chemical bond↔energy↔kJ/mol↔bond strength↔etc.

Table shows energy of common chemical bonds in selected unit (kJ/mol, atomic units, eV etc.).

Bond lengths in molecules

molecules↔geometry↔chemical bonds↔pikometry↔nanometry↔angstrems↔etc.

Tables show length of chemical bonds in selected molecules.

Braille alphabet

Braille↔ASCII table↔UNICODE↔SimBraille↔dot patterns

Table shows how to write ASCII characters in Braille. In addition to standard international characters, polish diactritic character are presented.

CIT rates in Poland (archive)

Poland↔income tax↔CIT↔legal persons↔tax rates↔archive↔etc.

Table shows rates of polish corporate income tax (CIT). Both current and historical data are presented.

Table shows signs and zodiac elementals used in Chinese zodiac.

Cooling mixtures

ammonium chloride↔sodium nitrate (III)↔amonium thiocyanate↔sodium acetate↔ammonium chloride↔dry ice↔liquid nitrogen↔etc.

Table shows composition (including mass ratio) of common cooling mixtures i.e. mixtures used to achieve low temperatures.

Country ISO codes

ISO 3166-1↔ISO 3166-2↔alpha-2↔alpha-3↔numeric code↔us↔uk↔de↔etc.

Table shows list of ISO 3166-1 and ISO 3166-2 codes assigned to different countries.

Critical pressure

p_C↔supercritical state↔triple point↔phase balance↔etc.

Tables show values of critical pressures specified for various chemical substances.

Critical temperature

T_C↔liquefaction↔density difference↔supercritical state↔etc.

Table shows critical temperatures of various chemical substances.

Cryoscopic and ebullioscopic constants

Kb↔Kf↔boiling point elevation↔freezing point depression↔

Table shows cryoscopic and ebullioscopic constant of selected substances.

Crystal lattice energy

crystal↔solid stade↔lattice energy↔kJ/mol↔Einstein's solid↔etc.

Table shows lattice crystal energy in kJ/mol for selected ion compounds.

Currency ISO codes

ISO 4217↔alpha-3↔numeric code↔USD↔GBP↔EUR↔etc.

Table shows list of ISO 4217 codes assigned to different currencies such as EUR for Euro, USD for american dollar etc.

Table shows density of selected gases, solids and liquids.

Table shows derivatives of selected elementary functions of one variable f(x) such as linear function, square function, sine, cosine, logarithm etc.

Dipole moment of substances

chemical polarity↔water↔tetrachlorometan↔polar substances↔non-polar substances↔etc.

Table shows values of electric dipole moment of various chemical substances given in any unit you prefer such as debyes, coulomb times meter, atomic units of dipole moment etc.

Dissociation constants of substances

dissociation↔equilibrium constant↔K1↔K2↔K3↔etc.

Table shows dissociation constants of selected chemical substances in temperature 298K (25°C).

Economic growth rate in Poland (archive)

Poland↔economic growth↔GDP growth

Table shows economic growth rates (GDP growth) in Poland. Both annual and quarterly rates are presented.

Table shows effective tax (work cost) in different countries.

Electrode overpotential

electrochemistry↔electrodes↔polarization↔Nernst's equation↔etc.

Table shows overpotential values on selected electrodes.

Table shows common classification of electromagnetic waves based on frequency (wavelength). Also, example methods of producing/generating and applications for given wavelengths are presented.

Electron affinity

gaseos state of elements↔atomic properties↔electron addition↔negative ion↔eV↔kJ/mol↔etc.

Table shows electron affinity (i.e. the amount of energy released when an electron is added to atom) for most of chemical elements.

Electron configuration

electrons↔orbitals↔quantum numbers↔1s↔2s↔2p↔3s↔3p↔3d↔etc.

Table shows electron configuration of chemical elements in groundstate.

Elementary particles

proton↔neutron↔electron↔mesons↔bozons↔leptons↔quarks↔neutrino↔etc.

Table shows basic properties of elementary particles.

Employment in enterprise sector in Poland

poland↔number of employees↔enterprise sector↔central statistical office

Table shows monthly number of employees in enterprise sector in Poland delivered by Central Statistical Office (polish: GUS). Values are given in thousands of people. Current and historical data are presented.

Enthalpy of vaporization

heat↔enthalpy↔evaporation↔kJ/mol

Tables show (latent) heat of vaporization of various chemical substances under normal conditions (1013,25 hPa, 25 °C).

Equation types

algebraic↔differential↔integral↔exponential↔linear↔quadratic↔with one unknown↔with many unknowns↔etc.

Short summary of common equation types (algebraic, linear, differential etc.).

Exponentiation: formulas

base↔exponent↔power↔square↔cube↔power multiplication↔power division↔power to root↔etc.

Tables show common formulas and properties related to exponentiation (power function).

Flame test

flame color↔qualitative analysis↔red-cherry↔yellow-orange↔mauve↔etc.

Table shows flame colors specific to given chemical elements such as yellow-orange for sodium (Na), red-cherry for lithium (Li) etc.

FourCC codes

fourCC↔video codecs↔DIVX↔VP80↔WMV3↔etc.

Table shows list of fourCC identifiers for common video codecs.

GS1 prefixes

GS1↔EAN↔country code↔barcode prefix↔etc.

Table summarizes GS1 country codes also known as barcode prefixes.

Galaxy datasheet

Milky Way↔The Galaxy↔diameter↔density↔mass↔etc.

Table shows basic physical properties of our Galaxy i.e. Milky Way. Presented data are for example diameter, mass, mean density etc. but also less common like distance of the Sun from the center of the Galaxy.

Galvanic series

electropotential series↔oxidation↔reduction↔standard electrode↔nobility of metals↔etc.

Table shows electrochemical potential of selected elements i.e. so-called galvanic series.

Table shows small and big greek letters with their example usage in various kind of science such as mathematics, physics or chemistry. Additionally, it shows how to get a given greek letter in the HTML code (so-called HTML entities), TeX and TeX based formats such as LaTeX, KaTeX, MathJax etc. or in the UNICODE system.

HEX/DEC table

hexadecimal↔decimal

Lookup table (4096 entries) for fast manual conversion of decimal to hex, or hex to decimal numbers.

IBAN codes

IBAN↔BIC↔format↔country codes↔BBAN↔length↔etc.

Table summarizes formats of IBAN (International Bank Account Number) numbers used in different countries.

ISO 8859-2 (Latin-2) table

iso/latin hex dec oct bin html

The whole set of ISO 8859-2 (Latin-2) characters. Table shows decimal (DEC), hexadecimal (HEX), octal (OCT) and binary (BIN) indexes, but also HTML entities (in 3 different formats), ANSI-C entities, unicode (HEX, OCT and DEC) and textual descriptors.

Inflation in Poland (archive)

Poland↔inflation rate↔historical values since 1950

Table shows annual inflation rates in Poland since 1950.

Inflation over the world (archive)

inflation rate↔historical values↔USA↔Japan↔Germany↔UK↔Australia↔Poland↔etc.

Table shows annual inflation rates in various countries.

Table shows indefinite integrals (antiderivative) of selected functions.

Ionization energy

atomic properties↔kJ/mol↔HOMO↔LUMO↔atomic orbitals↔valence electrons↔etc.

Table shows ionization energy of chemical elements given in kJ/mol.

Logarithm

decimal logarithm↔natural logarithm↔logarithm base↔change of base↔sum↔difference↔etc.

Table shows common properties and formulas related to logarithms (logarithm function).

MTU table

Maximum transmission units

MTU (Maximum Transmission Unit) values assigned to given network type.

Materials resistivity

resistivity↔ohm × metre↔copper↔gold↔silver↔mercury↔etc.

Table shows resistivity values of common materials (substances).

Math constants

over 200 math constants↔e number↔pi number↔golden ratio↔Khinchin's constant etc.

Table constrains over 200 mathematical constants with common informations such as approximated value, date of discovery or last known precision (number of significant digits). This includes basic constants (e.g. pi number), but also less common constants such as Khinchin's constant are presented.

Math dictionary en-pl

math dictionary↔math phrases in polish↔geometry↔sequences↔calculus↔series↔etc.

Tables contain english to polish translation of common math related phrases. Dictionary entries are grouped into functional groups such as geometry, sequences or - even more specialized - related to isosceles triangle etc.

Math operation: result signs

addition↔subtraction↔multiplication↔division↔etc.

Table shows how sign of arguments (positive, negative) affect the final result for various math operations such as addition, subtraction, multiplication etc.

Math table: exponential function

a to x↔exp(x)↔exponent↔exponential function↔etc.

Table show common formulas related to exponential function.

Math table: homographic function

homographic function↔(ax+b)/(cx+d)↔hiperbola↔vertical asymptote↔horizontal asymptote↔a/x↔discriminant↔ad-bc↔etc.

Table shows common formulas related to homographic function such as discriminant of the function (ad-bc) or asymptotes formulas (vertical and horizontal).

Math table: linear function

linear function↔y=ax+b↔slope↔free parameter↔root↔slope-intercept form↔point-slope form↔constant-slope form↔etc.

Tables show common formulas related to linear function such as various form of presentation (slope-intercept, point-slope, constant-slope etc.) or root formula (zero of a function).

Math table: quadratic function

quadratic function↔ax² + bx + c↔discriminant↔roots↔parabola↔vertex↔etc.

Tables show common formulas related to quadratic function such as various form of representation (standard, factored, vertex etc.) or formula for discriminant of quadratic function often called simply delta

Math tables: analytic geometry

point↔distance↔norm↔line segment↔etc.

Tables show typical formulas related to analytic geometry such as distance between two points.

Math tables: combinatorics

variations↔permutations↔combinations↔binomial coefficient↔factorial↔etc.

Tables show common formulas useful in combinatorics such as number of variations (with or without repetition) or binomial.

Math tables: coordinate systems

cartesian↔spherical↔cylindrical↔polar↔etc.

Table shows formulas for conversion between various coordinate systems for example from cartesian to cylindrical or vice versa. Formulas for both two and three-dimensional coordinate systems are presented.

Math tables: geometry

surface area↔circumference↔radius↔disk↔square↔rectangle↔triangle↔trapezoid↔rhombus↔etc.

Tables show typical formulas related to geometry such as surface area of various geometric plane shapes, disk circumference, sphere volume etc.

Math tables: statistics

arithmetic mean↔geometric mean↔standard deviation↔variance↔etc.

Table shows common formulas used during statistical data processing such as various types of means (averages), standard deviation or variance.

Math tables: stereometry (3D)

cube↔cuboid↔cylinder↔sphere↔cone↔lateral surface area↔solid volume↔etc.

Table shows common formulas related to shapes (solids) in three dimensions i.e. so-called stereometry.

Melting point

freezing↔melting↔temperature↔solid-liquid change↔etc.

Tables show melting points of various chemical substances. You see name and chemical formula next to temperature converted to the unit of your choice (Celsius deegres, kelvins, Fehrenheits degrees etc.)

Minimum wages over the world

minimum wage↔countries comparison

Table shows minimum wages in different countries.

Molar mass

M↔g/mol↔molecule weight↔mole of substance

Tables show molar mass of various chemical compounds.

Molar volume of gases

V0↔22.4 dm³↔perfect gas↔real gas

Tables display the volume that one mole of the selected gas occupies.

Moon data sheet

moon↔apollo program↔distance from Earth↔radius↔surface area↔soil temperature↔orbital speed↔etc.

Table shows common physical properties of the moon such as mean radius, distance from the Earth (average, minimum and maximum), mean density, volume etc.

Moons of the planets

luna↔phobos↔deimos↔io↔mean radius↔semi-major axis↔sidereal period↔discovery year↔etc.

Table shows all known, natural satellites (i.e. moons) of the planets in Solar System including some common characteristics such as mean radius, semi-major axis, sidereal period or discovery year.

Morse alphabet

Morse codes↔letters↔digits↔SOS↔amateur radio↔etc.

Table shows common Morse codes for letters, digits and selected special codes such as international SOS signal.

Multiplication table with changeable size

Names of large numbers

milliard↔bilion↔trylion#8596;quintilliard#8596;short and long scales#8596;etc.

Table contains names of large numbers such as million, milliard, billion etc., but also less common e.g. quintilliard. Calculator supports two naming systems (so-called scales): "short scale" (used in most English-speaking countries e.g. UK or USA) and "long scale" (used in most of continental Europe countries).

Note frequencies

basic tone↔1-st harmonic↔2-nd harmonic↔3-rd harmonic↔etc.

Table shows frequencies of music notes in twelve-tone equal tempered system (12-TET). Both basic tone and up to three harmonic frequencies are presented.

Number operations

addition↔multiplication↔community↔distribution↔etc.

Table shows basic properties of mathematical operations such as commutativity of addition or distributive property of multiplication over addition.

A metric units prefixes for numbers (SI prefixes).

Numerical sequences

arithmetic progression↔geometric progression↔common difference↔common ratio↔sum of n first elements↔etc.

Tables show common formulas helpful when you performing sequences related tasks such as sum of first n elements of arithmetic sequence or calculation arbitral element of geometric sequence.

Order of operations

addition↔multiplication↔division↔subtraction↔parentheses↔round, square, curly brackets↔etc.

Table shows order of common math operations, which should be applied while performing arithmetic calculations such as addition, subtraction, multilication, division etc.

PIT rates in Poland (archive)

Poland↔income tax↔PIT↔tax threshold↔tax rates↔tax base↔archive↔New Deal↔Nowy Ład↔etc.

Table shows rates of polish personal income tax (PIT). Both current and historical data are presented, including division into tax thresholds.

PL: Tax-free threshold archive

Poland↔tax↔tax-free amount↔degressive tax↔tax thresholds↔New Deal↔Nowy Ład↔etc.

Table shows tax-free and so-called tax-decreasing amounts in Poland. Both actual and archive values are presented.

Paper size

A3↔A4↔A5↔B4↔C5↔RA0↔SRA3↔etc.

Table shows common paper size standards such as A4, A5 etc.

Periodic signals

sine↔triangle↔square↔mean value↔shape factor↔effective value↔etc.

Table shows properties of common periodic signals (sine, square, triangle etc.) such as absolute mean value, effective value or shape factor.

Permittivity of substances

relative permittivity ε↔liquids↔gases↔solvents↔etc.

Tables show relative permittivity (to vacuum) of various substances (solvents).

PnP Vendor ID

PnP↔Plug & Play↔hardware vendor id↔vendor name↔etc.

Table shows list of 32-bit identifiers assigned to hardware vendors used in Plug & Play devices

Poland: NBP deposit rates

poland↔bank rates↔deposit rates↔monetary policy↔central bank

Deposit rates of National Bank of Poland are adjusted each month by Monetary Policy Council (polish: RPP). Both actual and historical data are presented.

Poland: NBP discount rates

poland↔bank rates↔discount bills↔monetary policy↔central bank

Discount bills rates of National Bank of Poland are adjusted each month by Monetary Policy Council (polish: RPP). Both actual and historical data are presented.

Poland: NBP lombard rates

poland↔bank rates↔lombard rate↔monetary policy↔central bank

Lombard rates of National Bank of Poland are adjusted each month by Monetary Policy Council (polish: RPP). Both actual and historical data are presented.

Poland: NBP rediscount rates

poland↔bank rates↔rediscount bills↔monetary policy↔central bank

Rediscount bills rates of National Bank of Poland are adjusted each month by Monetary Policy Council (polish: RPP). Both actual and historical data are presented.

Poland: NBP reference rates

poland↔bank rates↔reference rate↔monetary policy↔central bank

Reference rates of National Bank of Poland are adjusted each month by Monetary Policy Council (polish: RPP). Both actual and historical data are presented.

Poland: central bank rates (NBP)

poland↔bank rates↔monetary policy↔central bank

All basic interest rates of the National Bank of Poland presented in one table. Both actual and historical data are presented.

Table shows rates of polish "interest by law". Both current and historical data are presented, including latest division into interest for delay, capital and interest for delay in commercial (new act from 2016 year).

Table shows rates of polish "tax interest". Included both current and historical data.

Polish ZUS rates with minimal tax base. Included both current and archived (starting from 2007) rates.

Polish accident insurance

Poland↔accident insurance↔ZUS↔PKD codes↔risk factor↔etc.

Table shows the rate of obligatory accident insurance contribution assigned to different type of work activity in Poland (grouped by so-called PKD codes and risk groups). Both actual and historical rates are presented.

Polish health contribution (lump-sum tax)

poland↔lump-sum-tax rates↔health contribution↔NFZ↔New Deal↔Nowy Ład↔etc.

Table shows the amount of monthly health contribution (polish: NFZ) depending on your annual sales if you use lump-sum tax rates in Poland.

Polish lump-sum tax rates

poland↔lump-sum tax↔tax rates↔type of activity↔PKWiU codes↔New Deal↔Nowy Ład↔etc.

Table shows current lump-sum tax rates used in Poland depending on type of activity (PKWiU codes).

Polish registered unemployed

poland↔registered unemployed↔central statistical office

Table shows monthly number of registered unemployed in Poland given in thousands of persons. Data are delivered by Central Statistical Office (polish: GUS). Current and historical data are presented.

Table shows annual limits for polish individual retirement pension (IKE) and individual retirement protection (IKZE) accounts, which are both an elements of the voluntary 3rd pillar retirement pension system in Poland. Included both actual and historical data.

Polish travel allowance (foreign) table

Poland↔table↔subsistence allowance↔per diem↔daily rates↔night cost limit

Table shows daily allowance rates for foreign travels in Polish business or employment.

Polish travel allowance (national) table

Poland↔table↔subsistence allowance↔per diem↔daily rates↔national travels↔hotel flat-rate

Table shows daily allowance rates for national travels in Polish business or employment. Included both actual and historical data.

Polish treasury bonds

poland↔treasury bonds↔retail↔finance ministry↔rates↔etc.

Table shows retail treasury bonds available in Poland.

Polish unemployment rate

poland↔unemployment rate↔central statistical office

Table shows unemployment rate in Poland published by Central Statistical Office (polish: GUS). Current and historical data since 1990 are presented.

Common TeX (and TeX based systems such as LaTeX, KaTeX, MathJax etc.) commands grouped in one place. Quick TeX cheatsheet/crib helpful while writing any scientific text containing math formulas like mathematical or physical publications.

Real work cost in Poland (archive)

Poland↔all taxes sum↔effective tax↔total work cost↔New Deal↔Nowy Ład↔etc.

Table shows effective work cost in Poland including all taxes and insurance contribution, which decreases final net sallary ("on-hand"). Both actual and historical data for various employment forms (employment contract, B2B) are presented.

Roman numbers

I, II, III, IV, V etc.

Table shows basic Roman numbers (I, II, III, V, X, M, C etc.) and corresponding Arabic numbers.

School break calendar

winter holidays↔summer holidays↔school break↔school calendar

Table shows when summer and winter holidays are in different places in the world. Both actual (ongoing) and historical data are included.

Comparison of different shoe size systems - European (EU), United Kingdom (UK, British), foot size in centimeters (CM) and few more.

Short multiplication formulas

square of a sum↔cube of a sum↔square of a difference↔cube of a difference↔etc.

Tables shows various short multiplication formulas. Both common formulas such as (a + b)² (square of a sum) and general cases (e.g. any power of a sum) are presented.

Solar System planets

solar system↔mercury↔venus↔earth↔mars↔aphelion↔perihelion↔semi-major-axis↔mean radius↔etc.

Table shows most common properties of Solar System planets collected into one set of data.

Solubility equilibrium of substances

dynamic equilibrium↔dissociation↔solubility↔precipitation↔etc.

Table shows solubility equilibriums of selected substances, mainly sparingly soluble salts and hydroxides.

Solubility of substances

solubility↔g/100g of water↔temperature↔°C↔gases↔liquids↔salts↔etc.

Table shows solubility of various substances under different temperature given in grams of dissoluted substance per 100g of water.

Solution color

water solutions↔blue Cu²⁺↔purple MNO₄^-↔etc.

Table shows solutions color characteristic to given ions (cations or anions) such as Cu²⁺ (blue) or MNO₄^- (purple).

Solutions density by concentration

density↔concentration↔solution↔g/cm3↔etc.

Tables show density of chosen water solutions depending on concentration of dissolved substance at 20 °C.

Sound absorption coefficients

sound absoprption↔building materials↔reverbation↔damping↔room coloration

Table shows sound absorption coefficient for different building materials.

Sound insulation countours

STC↔Rw↔weighted SRI↔countour↔ASTM E-90↔ISO 717↔etc.

Table shows spectral contour used to measure sound insulation in various standards such as STC or Rw.

Sound intensity level (dB)

sound level↔decibel↔logarithmic scale↔noise level↔acoustic pressure↔etc.

Table shows examples of sound sources with various intensity level given in decibels.

Sound reduction index (SRI)

Rw↔weighted sound reduction index↔SRI↔sound insulation↔sound-proofing↔transmission loss

Table shows sound reduction indexes (SRI) for common materials.

Sound transmission class (STC)

STC↔weighted sound reduction index↔sound insulation↔sound-proofing↔transmission loss

Table shows sound transmission classs (STC) for common building materials.

Table shows speed of sound within medium compound of various materials such as air, steel or water.

Table shows specific heat capacity of selected gases, solids and liquids.

Stable isotopics

stable isotopes↔atomic number↔mass number↔chemical elements↔etc.

Table shows isotopic composition of chemical elements occurring permanently in nature. Isotopes obtained artificially are not presented here.

Standard enthalpy of creation

ΔH0↔standard conditions↔1013.25 hPa↔298K

Tables show values of standard (1013.25 hPa, 298K) enthalpy of creation (from free elements) of various chemical compounds.

Standard entropy

S0↔standard conditions↔1013.25hPa↔298K

Tables show values of standard entropy (1013.25hPa, 298K) of various chemical substances.

Standard free enthalpy of creation

ΔG0↔standard conditions↔1013.25 hPa↔298K

Tables show values of standard (1013.25 hPa, 298K) free enthalpy of creation (from free elements) of various chemical compounds.

Standard half-cell potentials

half-cell↔SEM↔E0↔galvanic cell↔cathode↔anode↔hydrogen electrode↔etc.

Table shows standard potentials of common half-cells at 25 °C.

Taxes over the world: PIT, CIT, VAT

comparison↔world↔income tax↔PIT↔CIT↔VAT↔tax threshold↔tax rates↔etc.

Table compares rates of personal (PIT) and corporate (CIT) income and value added (VAT) tax rates in different countries.

Top-level domains

.com↔.gov↔.net↔.org↔.de↔etc.

Table shows common list of top-level internet domains such as .com, .net or related to given region such as .pl or .de.

Table shows values of trigonometric functions of selected angles. Included functions are: sine, cosine, tangens and cotangens. Both deegres and radians angles are presented.

Table shows so-called rediction formulas, which allow to calculate values of trigonometric functions of obtuse angle (more than 90 degrees) without calculator easily.

Trigonometry identities

Pythagorean identity↔double angle↔half angle↔angles sum↔sum of functions↔etc.

Tables show common trigonometric identities and formulas such as Pythagorean trigonometric identity, sine of half angle formula, etc.

Triple point

phase diagram↔temperature↔pressure↔gas-liquid-solid equilibrium

Tables show triple points (temperature and pressure) of selected substances i.e. conditions when all three phases (liquid, solid and gas) coexist in thermodynamic equilibrium.

Table summarizes how to read load index codes printed on tyres and more.

Table summarizes how to read speed ratings codes printed on tyres and more.

Units of measurement: CGS

acceleration and gal↔force and dyne↔energy and erg↔pressure and brye↔↔etc.

Table shows various units (gal, erg, dyne etc.) and corresponding physical quantities (measurements) used in historical CGS (centimetre-gram-second) system. Both basic CGS and EMU/ESU extensions are presented.

Units of measurement: SI

metre and length↔kilograme and mass↔ampere and electric current↔etc.

Table shows various units (kilogram, metre, ampere etc.) and corresponding physical quantities (measurements). Both basic SI and selected derivated units are presented.

Water density

water↔density↔kg/m³↔temperature↔degrees Celsius↔normal pressure↔1013,25 hPa

Table shows how density of water depends on temperature. Data were measured under so-called normal pressure i.e. 1013,25 hPa.

Well-known TCP/UDP ports

HTTP↔HTTPS↔SSH↔UDP↔TCP↔IANA↔FTP↔etc.

Table shows list of well-known TCP and UDP ports with assigned applications. Both official standarized by IANA and unofficial, but popular ports are presented.

Table shows Young's modulus of various materials such as foam, concrete, rubber etc.

e number

E number↔Euler's number↔Neper's number↔base of the natural logarithm↔2.71828↔etc.

Table shows various methods of calculation or definitions of the so-caller e number.