Episode 17 – How is rain formed?

13. November 2020.

How it rains
Guest: Luka Ilić

‘Clouds form where there is a condensation of water vapour. Sometimes not only water droplets are present in the clouds but also water crystals, with various particles being contained in them’, explains Luka Ilić of the Institute of Physics, Belgrade in the seventeenth episode of the popular science video series ‘The Garden of Physics’ which discusses how it rains, as well as the way meteorologists, make weather forecasts.

In Ilić’s words, nowadays meteorology primarily relies on numerical models, i.e. equation systems describing the atmosphere. ’Based on the measurements, we determine the current state of the atmosphere and by the application of these numerical models, we calculate the future weather forecast’, elaborates Ilić.

The Institute of Physics, Belgrade owns its meteorological station where LIDAR device is located. ’In a sense, it is similar to a radar. LIDAR emits laser radiation dispersing on particles in the atmosphere’, says Ilić and further explains that this device does not provide information on its location but is used to remotely detect and collect information on the vertical profile of the atmosphere.

Realized in cooperation with the portal ’Science Through Stories’, each episode of ’The Garden of Physics’ is dedicated to one of the fundamental topics of modern science, whether it is the greatest secrets of our times or research indicating unexpected horizons in the perception of the world. New episodes are aired every Friday online and they are available on webpages of the Institute of Physics, Belgrade and the portal „Science Through Stories“, as well as on You are welcome to join us.

Authors: Marija Đurić and Slobodan Bubnjević
Scenario: ’Science Through Stories’
Camera/drone: Zoran Veljanoski, Bojan Živojinović (Twotech Solutions)
Production associate: Jovana Nikolić
Directing and editing: Bojan Živojinović

Produced by: Insitute of Physics, Belgrade, 2020