What did Max Planck discover?

Urdu Translation: غیر محفوظ، غیر مستحکم، خطرناک حد تک غیر یقینی۔ Meaning: Precarious describes something unstable, uncertain, or risky, often likely to collapse or fail. It is used for physical positions, financial conditions, or situations that are insecure. In exams, it reflects risk and instability. Example sentence: “The climber was in a precarious position on the steep cliff.” Other Synonyms: unstable, unsafe, risky, uncertain, shaky, insecure, hazardous, fragile, doubtful, unreliable, dangerous. Usage Insight: The word emphasizes lack of safety or stability.

Urdu Translation: سخت، سادہ، بے آرائش۔ Meaning: Austere refers to something strict, plain, simple, or without luxury. It can describe a person who is serious and strict or a lifestyle that is very simple and without comfort. In literature and academic writing, it often shows discipline, severity, or lack of decoration. Example sentence: “The monk lived an austere life with minimal possessions and strict daily routines.” Other Synonyms: stern, strict, severe, rigid, plain, harsh, disciplined, minimal, unadorned, spartan, rigidly simple. Usage Insight: The word often combines seriousness with simplicity or lack of comfort.

The Leaning Tower of Pisa, begun in 1173, was intended as a bell tower for Pisa’s cathedral, famous for its unintended tilt.

John Dalton (1803) proposed modern atomic theory, stating matter consists of indivisible atoms with specific weights.

The Great Barrier Reef, the world’s largest coral system, lies off the coast of Queensland, Australia.