In the last 30 years, Pakistan has faced an epic energy crisis, and the government has fumbled spectacularly in trying to match supply with demand. For some mysterious reason, policymakers have completely ignored green energy options like hydro power, solar, and wind energy. It could be a lack of political will or just plain laziness of the ruling elite. Our politicians seem to be afflicted with a chronic case of "poor decision-making." They love quick fixes, no matter how expensive or impractical. Ironically, Pakistan is supposed to be a democracy, with leaders elected by the people. Yet, they craft policies that are completely out of touch with what the population needs. The topic of electricity tariffs has become the favorite subject of endless debates because, despite all the talk, the energy crisis remains as persistent as ever. Not investing in green energy is almost criminal. Households can't afford fossil fuel energy, and to make matters worse, the cost per kil
Nature's Great Book has countless Chapters waiting to be discovered.
As humans, our journey through this book begins the moment we open our eyes to this wonderful world.
Let's dig into some of its most fascinating chapters.
Gravity, for instance, is a standout chapter in this grand tome. Imagine if we could walk without gravity—impossible, right? We've been grounded long before Newton's apple fell, held by the invisible force that anchors us to the Earth.
From biology, we learn about our five senses: sight, hearing, touch, smell, and taste. But don't forget the sixth sense—the Sense of Balance. Lose it, and we’d be at gravity’s mercy, unable to stand.
Consider the Sun, another awesome chapter. It's the heart of our solar system, the only source of energy sustaining all life. Its heat and light evaporate ocean water, forming clouds that bring rain and snow, thanks to the ingenuity of nature that makes steam lighter than air.
Then, there's the Moon, Earth's natural mirror, reflecting the Sun's light and casting a romantic glow. Moonlight may stir emotions of love, yet its enchanting blue or silver hue is but an illusion.
Could Michael Jackson's moonwalk have been inspired by observing the moon's gentle reflection? May be.
Moving on to Matter and Density, another riveting Chapter. Matter exists as solids, liquids, and gases. Precious metals like gold, silver, and platinum captivate with their solid form, especially gold with its ornamental allure.
While gold catches the eye of many, engineers find fascination in metals like copper, iron, aluminum and silicon essential in their fields. And Mercury, the only metal in fluid form, useful for making thermometers and BP machines.
Fluids, including both liquids and gases, flow uniquely based on their densities. Birds soar with large wings in the low-density air, while fish swim with very short fins in denser water.
The Dead Sea has an exceptionally high salt concentration, resulting in a water density of about 1.24 kg/liter. This high density is what makes it easier for people to float in the Dead Sea.
The Book of Nature is endless, full of wonders that could occupy us for a lifetime. Dive into this extraordinary book, explore its chapters, and let its marvels deepen your understanding.
Here's a thought-provoking question:
Why does the full moon appear larger at the horizon?
Answer:
The full moon seems larger at the horizon due to diffraction. As light waves—electromagnetic in nature—encounter objects, they diffract. When sunlight hits the moon and reflects back to Earth, it undergoes diffraction. This effect, coupled with the moon's greater apparent distance at the horizon, creates the illusion of a larger moon.
At the horizon, the moon might be farther away, but it deceptively appears larger.
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