This Is Not Yellow

TL;DR

Objects appear a certain color due to the wavelengths of light they reflect, and the brain can be easily tricked into perceiving colors differently. Additionally, lemons can produce electricity, artists create unique lighting sculptures, and there are interesting art illusions and facts about memory.

Transcript

Using GPS, these trails represent pizza delivery in Manhattan on a typical Friday night. And is this a frog or a orse? It's episode 52 of IMG! This lemon looks yellow to me, and it probably looks yellow to you as well, but not in the same way. You see, here in this room, this lemon is "Subtractively Yellow." It absorbs all visible wavelengths of li... Read More

Key Insights

• 🙂 The perception of color is based on the wavelengths of light reflected by an object and the activation of different cone cells in the retina.
• 🩵 Objects can appear a certain color even if the light source does not emit that specific color, as the brain can be easily tricked into perceiving colors based on a combination of red, green, and blue light.
• 😘 Lemons can generate electricity when combined with zinc and copper, although the voltage produced is relatively low.
• 🧑‍🎨 Artists create unique lighting sculptures using various materials, such as apples, wax, and carved wood.
• 🎨 There are art illusions that involve hidden images within pictures and clever billboard designs.
• 👯 A chart by xkcd shows that fewer people will remember specific historical events as time progresses.
• 🖐️ Memory plays a significant role in personal and cultural recollection, and there is a decline in the number of people who remember past events as time passes.

Questions & Answers

Q: How does the brain perceive the color of an object?

The brain perceives color based on the wavelengths of light that an object reflects. The activation of different cone cells in the retina contributes to color perception, with yellow being a combination of red and green cone cell activation.

Q: Can lemons produce electricity?

Yes, lemons can produce electricity when combined with zinc and copper. However, the amount of electricity produced is relatively low. It would take a large number of lemons to power devices like flashlights or bulbs.

Q: What are some unique lighting sculptures created by artists?

Caleb Charland created a sculpture by hammering nails into apples hanging on trees, connecting them to a household lamp to produce a dim glow. Steve Shaheen's sculptures feature bulb-headed figures trying to plug themselves in. Merve Kahraman's "Revitalizer" is a lightbulb surrounded by wax that melts and creates unique shapes.

Q: What are some interesting art illusions mentioned?

There are illusions depicting hidden images within pictures, such as a couple with a hidden image of the baby they will have, and zebras with a hidden image of a lion. Additionally, there is a clever billboard design that creates the illusion of someone pushing out a section of a building.

Summary & Key Takeaways

• Objects appear a specific color because they reflect certain wavelengths of light, and the brain uses the activation of different cone cells to interpret and perceive colors.

• Lemons can generate electricity when combined with zinc and copper, although the voltage produced is quite low.

• Artists create unique lighting sculptures, such as Caleb Charland using apples to power a household lamp and Steve Shaheen's sculptures featuring bulb-headed figures.

• There are various art illusions, including hidden images within pictures and clever billboard designs.

• A chart by xkcd shows that as time progresses, fewer people will remember specific historical events and cultural moments.