I conducted a virtual experiment using the javalab simulation called the Special Relativity: Time dilation using the link https://javalab.org/en/special_relativity_en/. The lab is to examine the elasped time measured by each observer inside of the moving spaceship (t_o) and outside of the moving spaceship (t).

The meanings of the symbols used in this simulation are as follows.

• L = Distance that light travels in a stationary state, (=ct?)
• c = Speed of light (? 299,792,458 m/s)
• t? = The transit time of light observed inside the spacecraft(or the transit time of light observed in a stationary state)
• t = The transit time of light observed outside the spacecraft
• v = The speed of the spaceship

Ratio of Time Outside and Inside of the Spaceship (At/At) 8 7 6 5 4 3 2 1 0 O 0.03 0.06 0.09 0.12 0.15 0.18 Ratio of Time Outside and Inside of the Spaceship vs Speed of the Spaceship Ratio of Speed of Spaceship and Speed of Light (v/c) 0.69 0.72 0.75 0.78 0.81 0.84 0.87 0.9 0.93 0.96 0.99Times Measured by an Observer Outside and Inside of the Spaceship (s) 6 2 W 0 O 0.03 0.06 0.09 Ratio of Speed of Spaceship and Speed of Light Times Measured by an Observer Outside and Inside of the Spaceship VS -Time observed outside of the spaceship (s) -Time observed inside of the spaceship (s) Ratio of Speed of Spaceship and Speed of Light (v/c) 0.84 0.87 0.93 0.96 0.99If the spacecraft is moving with speed v ct - - L = ct. - - - - vtto H