The uncertainty principle and the concept of wave nature of matter were proposed by.............and ............respectively.

Explanation

To solve the question regarding the scientists who proposed the uncertainty principle and the concept of wave nature of matter, we can follow these steps:

### Step 1: Identify the Uncertainty Principle
The uncertainty principle is a fundamental concept in quantum mechanics that states it is impossible to know both the exact position and exact momentum of a particle simultaneously. This principle was formulated by the physicist **Werner Heisenberg**.

### Step 2: Identify the Wave Nature of Matter
The concept of wave nature of matter suggests that particles, such as electrons, exhibit both wave-like and particle-like properties. This dual nature was proposed by **Louis de Broglie**. He introduced the idea that matter can be described as waves, leading to the formulation of the de Broglie wavelength.

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