Tag: Weekly Photo Challenge

Weekly Photo Challenge : Bridge

From the decorative, to the purely functional, Saint Petersburg is host to very many bridges over its canals and rivers. For the tourist from ‘down under’, they are symbolic of  getting to know the culture and people of this distant country.

Decorative Bridge over Moyka River
Decorative Bridge near Church of The Saviour on Spilled Blood
Functional Bridge near Church of The Saviour on Spilled Blood
Millionaire Street Bridge over the Winter Canal
Bridge over the Winter Canal from the canal
Bridge over the Winter Canal from Millionaire Street Bridge
Pevcheskiy Bridge over the Moyka River (load bearing)

Weekly Photo Challenge, Bridge

Weekly Photo Challenge : Delta

Oh, how those formulae rush back to mind!

Velocity is change of distance divided by the time elapsed, represented as

v=Δd/Δt

Acceleration is change of velocity over time, represented as

a=Δv/Δt

Delta (Δ) is not the only Greek letter used in Mathematics and Physics, but it makes its presence felt many times during our school and university years.

The express train accelerates to speeds up to 200km/hr, and then it decelerates smoothly to stop at the right point of the platform.

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This is an entry in this week’s challenge. Many more entries can be found here