The Short Answer: No, you wouldn't get sunlight if the Earth was made of glass.

The Explanation:

* Glass is transparent to some wavelengths of light: The reason we see through glass is that it allows certain wavelengths of light, mainly in the visible spectrum, to pass through it.

* Glass absorbs other wavelengths: However, glass also absorbs other wavelengths of light, including a significant portion of the infrared radiation that makes up sunlight's heat.

* Sunlight is a mixture of wavelengths: Sunlight is not just visible light; it includes a wide range of wavelengths, from ultraviolet to infrared.

* A glass Earth would act like a giant greenhouse: If the Earth were made of glass, the incoming sunlight would be partially blocked by the glass, but the infrared radiation would be trapped inside. This would lead to a massive increase in Earth's temperature, likely turning it into a scorching hot planet.

So, even though some light would penetrate, the Earth would be incredibly hot, and the trapped heat would make it impossible for life as we know it to exist.