Carrots and oranges appear to be orange in color, though the pixels are not.pic.twitter.com/jETNUS77ND
This is the legacy version of twitter.com. We will be shutting it down on June 1, 2020. Please switch to a supported browser, or disable the extension which masks your browser. You can see a list of supported browsers in our Help Center.
I am an experimental psychologist who studies visual illusions as well as makes illusion artworks. #illusion #opticalillusion #perception #錯視
You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more
Add this Tweet to your website by copying the code below. Learn more
Add this video to your website by copying the code below. Learn more
By embedding Twitter content in your website or app, you are agreeing to the Twitter Developer Agreement and Developer Policy.
| Country | Code | For customers of |
|---|---|---|
| United States | 40404 | (any) |
| Canada | 21212 | (any) |
| United Kingdom | 86444 | Vodafone, Orange, 3, O2 |
| Brazil | 40404 | Nextel, TIM |
| Haiti | 40404 | Digicel, Voila |
| Ireland | 51210 | Vodafone, O2 |
| India | 53000 | Bharti Airtel, Videocon, Reliance |
| Indonesia | 89887 | AXIS, 3, Telkomsel, Indosat, XL Axiata |
| Italy | 4880804 | Wind |
| 3424486444 | Vodafone | |
| » See SMS short codes for other countries | ||
This timeline is where you’ll spend most of your time, getting instant updates about what matters to you.
Hover over the profile pic and click the Following button to unfollow any account.
When you see a Tweet you love, tap the heart — it lets the person who wrote it know you shared the love.
The fastest way to share someone else’s Tweet with your followers is with a Retweet. Tap the icon to send it instantly.
Add your thoughts about any Tweet with a Reply. Find a topic you’re passionate about, and jump right in.
Get instant insight into what people are talking about now.
Follow more accounts to get instant updates about topics you care about.
See the latest conversations about any topic instantly.
Catch up instantly on the best stories happening as they unfold.
Carrots and oranges appear to be orange in color, though the pixels are not.pic.twitter.com/jETNUS77ND
左右端のニンジン(?)は色がついてないように見えます。真ん中のニンジンとオレンジ2つずつはオレンジに見えるんですが。
加算的色変換なら、左右端のニンジンも少しは橙色に見えると思います。それも個人差はあると思いますが。pic.twitter.com/cZUo4V7aXw
二色法画像は、色相が単一になります。「それじゃ、一色法だろ」と突っ込まれそうですね。
よほど鮮やかな(彩度の高い)色でないと、二色法で色の恒常性(元の色がわかること)は成立しないです。
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.