---
title: "Francois El-Daher (@feldaher) | Hashnode"
description: "Writes about science, engineering, tech stuffs. Read the latest articles by Francois El-Daher on Hashnode."
url: "https://hashnode.com/@feldaher"
---

@feldaher

# Francois El-Daher

@feldaher · Edinburgh, Scotland - UK · Joined June 2022

Writes about science, engineering, tech stuffs

### [GUI programming in python: why I chose to use Kivy](https://dataforlife.hashnode.dev/gui-programming-in-python-why-i-chose-to-use-kivy?utm_source=hashnode&utm_medium=feed)

Among the long list of GUI libraries, I decided to choose Kivy. Here's why.

4 min read · [dataforlife.hashnode.dev](https://dataforlife.hashnode.dev/gui-programming-in-python-why-i-chose-to-use-kivy?utm_source=hashnode&utm_medium=feed)

[Jul 11, 2024](https://hashnode.com/posts/gui-programming-in-python-why-i-chose-to-use-kivy/66905d32690335f6ffa5a32d)

### [Why are there moving lights at the bottom of swimming pools? Here comes the Transport of Intensity effect.](https://feldaher.hashnode.dev/transport-of-intensity-effect?utm_source=hashnode&utm_medium=feed)

Have ever noticed this typical network of bright-and-dark areas on the bottom of a swimming pool? This is a physical phenomenon that has many applications.

6 min read · [feldaher.hashnode.dev](https://feldaher.hashnode.dev/transport-of-intensity-effect?utm_source=hashnode&utm_medium=feed)

[Jul 7, 2022](https://hashnode.com/posts/transport-of-intensity-effect/62c6fdb5353b847f29e892a3)