Calculator™ © - Free Online Calculators

Online Calculators since 2009

- Biquad Filter Coefficient Calculator
- Magnetic Field Inside A Toroid Calculator
- Root Mean Square Speed Calculator
- Final Temperature Of Mixture Calculator
- Roche Limit Calculator
- Coulomb’s Law Practice Questions
- Electric Charges. Conductors and Insulators Practice Questions
- Angular Frequency Of Oscillations In Rlc Circuit Calculator
- Radiative Heat Transfer Calculator
- Radio Line of Sight Calculator
- Angle Of Refraction Calculator

The Stars Illumination Calculator will calculate the:

- Illumination (brightness) of a star S
_{2}if the apparent magnitude and illumination of another reference star S_{1}as well as the illumination of the star S_{1}are known.

**Calculation Parameters:** None of values can be zero

Illumination of the unknown star (b_{2}) [lux] |

Illumination of the unknown star calculation |
---|

b_{2} = b_{1} ∙ 10^{0.4 ∙ (m1 - m2 )}b _{2} = ∙ 10^{0.4 ∙ ( - )}b _{2} = ∙ 10^{0.4 ∙ }b _{2} = ∙ 10^{}b _{2} = ∙ b _{2} = |

Stars Illumination Calculator Input Values |

Apparent magnitude of the reference star (m_{1}) [] |

Apparent magnitude of the unknown star (m_{2}) [] |

Illumination of the reference star (b_{1}) [lux] |

Please note that the formula for each calculation along with detailed calculations are available below. As you enter the specific factors of each stars illumination calculation, the Stars Illumination Calculator will automatically calculate the results and update the Physics formula elements with each element of the stars illumination calculation. You can then email or print this stars illumination calculation as required for later use.

We hope you found the Stars Illumination Calculator useful with your Physics revision, if you did, we kindly request that you rate this Physics calculator and, if you have time, share to your favourite social network. This allows us to allocate future resource and keep these Physics calculators and educational material free for all to use across the globe. We believe everyone should have free access to Physics educational material, by sharing you help us reach all Physics students and those interested in Physics across the globe.

b_{2} = b_{1} ∙ 10^{0.4 ∙ (m1 - m2 ) }

This formula derives from:

m_{1} - m_{2} = -2.5 log *b*_{1}*/**b*_{2}

The following Physics tutorials are provided within the Cosmology section of our Free Physics Tutorials. Each Cosmology tutorial includes detailed Cosmology formula and example of how to calculate and resolve specific Cosmology questions and problems. At the end of each Cosmology tutorial you will find Cosmology revision questions with a hidden answer that reveals when clicked. This allows you to learn about Cosmology and test your knowledge of Physics by answering the test questions on Cosmology.

- 22.1 - Earth and Other Celestial Bodies
- 22.2 - Sun and Planetary Motion
- 22.3 - The Moon's Movement. Eclipses. Calendars
- 22.4 - Stars
- 22.5 - Evolution of Stars
- 22.6 - Galaxies and Hierarchic Structures in the Universe
- 22.7 - Astronomical Measurements and Observations
- 22.8 - Orientation in the Sky and Constellations
- 22.9 - Expansion of the Universe
- 22.10 - Big Bang Model and Temperature
- 22.11 - Chronology of the Universe
- 22.12 - Formation of Galaxies and Solar System. Actual Problems

You may also find the following Physics calculators useful.

- Voltage Divider Calculator
- Hardness Converter Calculator
- Electric Potential Energy Calculator
- Molecular Mean Free Path Calculator
- Bernoulli Theorem For Head Loss Calculator
- Final Temperature Of Mixture Calculator
- Weir Flow Calculator
- The Doppler Effect In Light Waves Calculator
- Radius Of Atomic Nuclei Calculator
- Conductive Heat Transfer Calculator
- Energy Density Of Magnetic Field Calculator
- Parallel Plate Capacitor Calculator
- Capacitance Of Concentric Spheres Calculator
- Magnetic Field At Centre Of A Current Carrying Loop Calculator
- Magnetic Field Produced Around A Long Current Carrying Wire
- Kinematics Of Angular Shm Calculator
- Capacitance Of A Sphere Calculator
- Torque Produced By A Rectangular Coil Inside A Uniform Magnetic Field Calculator
- Fanno Flow Calculator
- Led Series Resistor Calculator