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Tag: led light

“Vertical farming” in skyscrapers might be the next trend in locally-grown food, but wait until you hear about HORIZONTAL farming!

Background:

Recently, there has been discussion around the futuristic concept of “vertical farming”: growing crops in skyscraper-style greenhouses in city centers.

The issue:

Although there are many conceptual advantages to such a farm, there is at least one major difficulty: light. Obviously, only the topmost layer of a vertical farm would be practical to light with sunlight (Figure 1): lower layers would need to be lit with high-efficiency narrow-spectral-band LED lighting.

Fig. 1: This vertical farm (right) has a major downside: there’s really only one “floor” worth of sunlight, so it’s impractical to use sunlight for crop growth. Although LED lights can be extremely efficient, the power requirements of a large-scale vertical farm would be substantial.

Proposal:

The “horizontal farm” is the best of both worlds: a structure that can fit in the footprint of a single office building, yet is capable of harnessing sunlight from dozens of adjacent city blocks.

The horizontal farm building is designed as follows: it consists of a vertical stack of floors, just like a traditional skyscraper. However, the floors are not directly connected to each other: instead, they hang from two vertical rails that can pivot to a horizontal orientation.

When the rails begin rotating to the horizontal position (Figure 2), each “farm floor” pivots in the opposite direction, thus maintaining a horizontal orientation at all times.


Fig. 2: Each floor on this vertical farm is mounted on an enormous central pivot point. The building can be slowly turned from a vertical to a horizontal orientation. Now the plants can directly use the sun, cutting out the LED lighting middle-man!

Conclusion:

This bold new architectural design could be the future of locally-grown food!

PROS: Allows farming to harness the power of the sun directly, with no intermediate energy conversion (to LED lighting) required! Also has the advantage of providing valuable shade to city-dwellers who might otherwise get sunburns.

CONS: None!

Never get run over by a car again, thanks to this high-visibility LED modification for your laptop bag! Might save over one million lives per year in the world’s most crowded cities.

The issue:

In large cities, there are many perils for pedestrians: cars, bicycles, motorcycles, horses, etc.

Even the sidewalk is not a safe zone from scooters and bicycles!

At night, the problems are even worse, since pedestrians are generally un-illuminated and are frequently wearing all-black coats in the winter months.

Proposal:

Since many commuters carry a laptop bag, briefcase, or purse, it would be easy to put some sort of high-visibility indicator on this object: for example, an LED light (see animated designer laptop bag in Figure 1).

This would be less intrusive than wearing a high-visibility vest, and might be an easier sell to fashion-conscious commuters.

1-laptop-bag-blinking

Fig. 1: Fashionable designer laptop bag with caution tape and an LED light. Possibly OSHA-approved?

Figure 2 shows the same briefcase as a still image.

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Fig. 2: Thanks to this LED strip, the pedestrian holding the laptop bag is less likely to be hit by a scooter, bicycle, or car while walking on city streets.

Conclusion:

This is clearly the next evolution in fashion: reserve your designer laptop bag now!

PROS: Should reduce pedestrian fatalities and the city’s overall fashion rating at the same time.

CONS: May make your coworkers jealous and cause them them to plot against you.