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Distance
New post in Distance
How light years is measured?
December 23rd, 2020
units
measurements
speed-of-light
distance
Car Motion: Power and Distance: Air Drag
March 16th, 2020
power
drag
homework-and-exercises
distance
Perspective Redux (why objects seem smaller as the distance increases)
March 13th, 2020
geometry
distance
vision
optics
Distance traveled equals area under velocity time graph
December 27th, 2020
time
velocity
kinematics
distance
Observer looking out through the window of a train
June 27th, 2020
everyday-life
visible-light
optics
distance
How do you measure distance to stars within the galaxy?
April 7th, 2020
doppler-effect
astronomy
stars
distance
Most accurate ways to find the average distance between stars in Milky way galaxy
August 1st, 2022
galaxies
stars
distance
astronomy
What is the difference between position, displacement, and distance traveled?
July 30th, 2020
kinematics
distance
displacement
time
homework-and-exercises
Can you completely explain acceleration to me?
August 1st, 2022
velocity
distance
newtonian-mechanics
time
acceleration
The physics behind Google Glass' "prism"
April 13th, 2020
distance
optics
reflection
Are any of Euclid's 5 postulates false in Minkowski spacetime?
October 28th, 2020
special-relativity
distance
metric-tensor
Work = Force x Distance vs Displacement
May 20th, 2020
distance
forces
vectors
work
displacement
How could scientists know how far a star or galaxy is from us?
August 1st, 2022
astronomy
distance
stars
galaxies
Does the mass of a bicycle directly affect stopping distance?
March 24th, 2020
distance
friction
newtonian-mechanics
Difference between Gunn Peterson trough and the Lyman Alpha Forest? Cosmological implications?
August 1st, 2022
astronomy
cosmology
distance
galaxies
stars
How far can a shout travel?
January 17th, 2022
distance
estimation
everyday-life
waves
acoustics
Is there a proof that the set of real numbers can exactly represent distances?
May 5th, 2020
foundations
geometry
mathematics
distance
Why do objects appear smaller when farther away?
May 16th, 2020
distance
everyday-life
optics
perception
Flat throw vs 45 degree throw of a ball
January 3rd, 2020
kinematics
projectile
drag
distance
If work is a scalar measurement, why do we sometimes represent it as the product of force (a vector) and distance (scalar)?
March 20th, 2020
newtonian-mechanics
displacement
distance
vectors
work
The difference between comoving and proper distances in defining the observable universe
August 1st, 2022
distance
cosmology
spacetime
space-expansion
observable-universe
Photons from stars--how do they fill in such large angular distances?
July 23rd, 2021
stars
visible-light
photons
distance
When we say 'Andromeda galaxy is 2 500 000 light years away from us' do we mean 'now' or in a far past?
January 21st, 2022
distance
speed-of-light
time
astronomy
Why isn't the GPS location calculated from the Schwarzschild metric?
November 28th, 2020
general-relativity
special-relativity
metric-tensor
distance
gps
Inverse square rule for strong forces
August 1st, 2022
distance
quantum-chromodynamics
yang-mills
confinement
strong-force
How do astronomers measure the distance to a star or other celestial object?
April 9th, 2020
astronomy
distance
experimental-technique
What is the smallest distance possible between two stars?
June 25th, 2020
distance
stars
astrophysics
binary-stars
Why does one get an illusion as moon following him?
August 13th, 2022
everyday-life
visible-light
optics
distance
Is a light year a different distance if measured from a moving object?
October 9th, 2020
relativity
distance
speed-of-light
Why do objects appear smaller when viewed from a distance?
March 11th, 2020
geometry
distance
perception
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