Why do paper cuts hurt more than knife cuts?

If you accidentally cut your hand with paper, even if the scratch is small, it will cause terrible pain and take a long time to heal.
Human blood is red but in certain situations it can be green, for example in the deep ocean.
The reason is quite simple, you can use the physics knowledge learned in school to explain. According to the knowledge learned, any object we see is due to light reflecting from it and entering our eyes. Objects that absorb other light spectrums, reflecting red light will appear red.
But the reality is a little more complicated, objects typically reflect a range of wavelengths of light. Blood absorbs most colors and reflects light primarily in the red spectrum, with a much smaller amount of green and blue light.
Meanwhile, ocean water appears slightly blue because it absorbs a lot of light at red wavelengths. At a certain depth in the ocean, enough red light is absorbed that only the blue light is reflected back to our eyes, which then appears green. Therefore, human red blood appears green at ocean depths.
Because red light is absorbed very well by water, many species of fish appear red when living at the bottom of the ocean.
At the bottom of the ocean, red and black animals predominate. This is because black animals absorb all available colors of light, while red animals appear black because they have no red light to reflect and their bodies absorb all other available wavelengths of light.
If you accidentally cut your hand with paper, even if the scratch is small, it will cause terrible pain and take a long time to heal.
Snakes always amaze people with their extraordinary speed.
Weasels, arctic foxes… are animals that have the ability to change the color of their fur in winter, showing the magic of nature.
On Windows 11, the Microsoft Paint app lets you create AI objects in your photos to make them more interesting through the Generative Fill tool.
Like many other Roblox games, you will also have many attractive rewards by redeeming Fisch Roblox codes.
Code Ta is a little fairy that supports players when they start as a newbie. Players will receive many rewards such as gold, number of peaks opened and many other valuable rewards.
There are many quotes about women on the Internet. This article will summarize for you good quotes and proverbs about women.
Preparing for an interview by honestly assessing your skills is essential. This article will guide you on how to present your strengths and weaknesses to get good results when applying for a job.
This series includes three versions: Llama 4 Scout, Llama 4 Maverick and Llama 4 Behemoth.
In June 2024, Nvidia announced the full open source GPU code for its flagship physics simulation engine, PhysX SDK, including previously unreleased GPU simulation cores. The move is expected to spur innovation in GPU-accelerated computing.
Aging is inevitable, but there are certain habits that can speed up the process without you even realizing it.
Holding hands is the best way to show that you like her. This article will summarize for you the signs that your girlfriend is ready for you to hold her hand.
A new sodium-ion battery developed by researchers at the Korea Advanced Institute of Science and Technology (KAIST) can be fully charged in just a few seconds, opening up new hope for a breakthrough in battery charging technology.
A piece of space debris accidentally entered and severed the electrical cable connecting the core module's solar panels.
Anonymous structs in Golang are temporary structures with no names used for one-time purposes, while anonymous fields allow embedding of unnamed fields.