2016-10-09

# Act 1

• How far is the storm?
• How much did it rain?

# Act 2

## How much did it rain? bis

• If we know the records of near weather stations, can we estimate how much did it rain in our house?
• In what time this method would not be applicable? How many points (weather stations) do we need to apply this method?
• Can you apply it here?
• Can you estimate how much did it rain in red point? The raw data is available here (file is encoding with ISO-8859-14 (AEMET 2016)).

## How far is the storm?

• Can we find the distance between our house and storm if we know that there is a gap of $$n$$ seconds between thunder and lightning?
• Speed of light (Wikipedia 2016a)
• Speed of sound (Wikipedia 2016b)

# Notes

• In “How much did it rain? bis”, we can introduce baricentric coordinates and see that we need at least 3 points to assure the procedure is trustworthy. In this case we get a “geometric mean” of the stations.