📖+10 XP
🎧+10 XP
✅+15 XP
Level A1 – BeginnerCEFR A1
2 min
74 words
- Researchers in Egypt make two systems.
- Dust makes solar panels less efficient.
- First unit was placed in Cairo's Fifth Settlement.
- Vibration system shakes panels two times daily.
- It runs at noon and at 3am.
- A wind system moves panels with the wind.
- Field trials show smaller power loss.
- Conventional panels lost 33 per cent in six weeks.
- Vibration plus coating lost only 12.9 per cent.
- Cleaning one lamppost panel can cost 200 Egyptian pounds.
Difficult words
- panel — A flat surface used in electricity.panels
- dust — Small, tiny pieces of dirt.
- efficient — Working well without wasting energy.
- create — To make something new.created
- clean — Not dirty or marked; pure.cleaning
- vibration — A quick shaking movement.vibrations
- expensive — Costing a lot of money.
Tip: hover, focus or tap highlighted words in the article to see quick definitions while you read or listen.
Discussion questions
- Why do you think self-cleaning panels are important?
- How would dust affect other types of technology?
- Do you believe self-cleaning technology will become more common?
Related articles
24 Nov 2025
Band of Holes at Monte Sierpe: an Indigenous accounting system?
New evidence suggests the Band of Holes at Monte Sierpe in southern Peru was part of a pre‑European Indigenous system for accounting and exchange. Researchers used sediment analysis and drone images to reach this conclusion.
6 Dec 2025
5 Nov 2025
Inequality and Pandemics: Why Science Alone Is Not Enough
Matthew M. Kavanagh says science can detect viruses and make vaccines fast, but rising inequality makes pandemics worse. He proposes debt relief, shared technology, regional manufacturing and stronger social support to stop future crises.
24 Dec 2025
18 Dec 2025