🔭 Science

33 cards

Atmospheric Refraction: Why the Horizon Is Not Where You Think 📐 Measuring the Earth
Dip of the Horizon: How Far Can You See? 📐 Measuring the Earth
Einstein in Your Pocket ⏱️ Relativity
Eratosthenes' Shadow (240 BCE) 📐 Measuring the Earth
GRACE: Weighing the Earth with Two Chasing Satellites 🌐 Measuring the Earth from space
Gravity Is a One-Way Street: Pumped-Storage Hydro 🌊 Gravity & tides
Great-Circle Navigation: How Ships Actually Cross a Sphere 📍 Navigation
How a Spacecraft Steals Speed from a Planet 🛰️ Orbital mechanics
How Fast Is 'Orbit'? 🛰️ Orbital mechanics
How Radio Waves Measure Worlds 📐 Measuring the Earth
How Your Phone Knows Where You Are 📍 Navigation
Kepler's Third Law 🛰️ Orbital mechanics
Lunar Laser Ranging: Millimetre Precision on the Moon 🌐 Measuring the Earth from space
Measuring the Distance to the Stars 📐 Measuring the Earth
Satellite Altimetry: Measuring Sea Level to the Centimetre 🌐 Measuring the Earth from space
Sextant Math: How the Stars Give You Your Position 📍 Navigation
The Atmosphere Is a Gradient, Not a Layer 📐 Measuring the Earth
The Coriolis Effect: When It Matters, and When It Doesn't 🔄 Rotation & tilt
The Midnight Sun 🔄 Rotation & tilt
The Rocket Equation 🛰️ Orbital mechanics
The Sagnac Effect: Measuring the Earth's Rotation with Light 🔄 Rotation & tilt
The Scale of the Earth 📐 Measuring the Earth
Time: How We Measure It, and Why It Is a Hot Topic ⏱️ Relativity
Units of Measurement: Why Standard Units Matter 📐 Measuring the Earth
VLBI: Measuring the Earth with Radio Waves 🌐 Measuring the Earth from space
Where in Space Can an Object Sit 'Still'? 🛰️ Orbital mechanics
Why Do Some Orbits Lock Together? 🛰️ Orbital mechanics
Why Jupiter Has Two Asteroid Camps 🛰️ Orbital mechanics
Why Orbits Are Ellipses 🛰️ Orbital mechanics
Why Planets Are Spheres 🌊 Gravity & tides
Why the Earth Is a Squashed Sphere 📐 Measuring the Earth
Why the ISS Doesn't Fall Out of the Sky 🛰️ Orbital mechanics
Why the Moon Pulls the Oceans 🌊 Gravity & tides