Skip to the content Skip to the Navigation

科学のネタ帳

  • EXPERIMENT
  • MATERIALS
  • SEMINAR
  • PODCAST
  • CONTACT
  • ABOUT

October 2025

  1. HOME
  2. October 2025
2025年10月31日 / Last updated : 2025年10月31日 桑子 研 Science

Kitchen CSI: Unmasking the White Suspects (Salt, Sugar, and Flour!)

Every Day is an Experiment. Take a look at those pure white powders in your kitchen. Sugar, salt, flour. They look identical, but what if they got shuffled up and you couldn’t tell which was which? How would you identify them? (No tasting allowed!) This time, we’re diving into a “Science Mystery” lurking in our […]

2025年10月31日 / Last updated : 2025年10月31日 桑子 研 Science

Not Just a Leaf! The Hidden “Red Dots” on Cherry Leaves and Their Secret Life with Ants

This is Ken Kuwako, your Science Trainer. Every Day is an Experiment. 【This article is also available on the radio!】 When we talk about cherry blossom viewing, the beautiful petals are, of course, the main attraction. But have you ever taken a close look at the leaves—the very things that support the star of the […]

2025年10月31日 / Last updated : 2025年10月31日 桑子 研 Science

The Secret History of the Static ZAP: From 30,000 Volts on Your Doorknob to the Edo Period’s “Hundred People Shock.”

I’m Ken Kuwako, your Science Trainer. Every day is an experiment. On a dry winter day, the moment you reach for a metal doorknob… ZAP! ⚡ That unpleasant, voice-calling shock is something almost everyone has experienced. What exactly is that tiny spark? And in the Edo period, when its true nature was completely unknown, how […]

2025年10月30日 / Last updated : 2025年10月30日 桑子 研 Science

The Coil’s Secret: How to Catch the “Hold On a Minute!” Lag of Self-Induction

I’m Ken Kuwako, Science Trainer. Every Day is an Experiment. You flip the switch to “On!”, and electricity flows instantly with a “Zap!” A small light bulb lights up immediately. This is what we consider “normal.” But what if there was a “contrarian” component inside the circuit?You might flip the switch to say, “Time to […]

2025年10月30日 / Last updated : 2025年10月30日 桑子 研 Science

The Ammeter vs. Voltmeter Secret: Why Internal Resistance is the Key to the ‘Series vs. Parallel’ Rule

I’m Ken Kuwako, Science Trainer. Every Day is an Experiment. You probably learned in middle school science that “ammeters must be connected in series, and voltmeters must be connected in parallel.” You may have simply memorized it as “the rule,” but why must it be done that way? Ammeters and voltmeters look nearly identical. Perhaps […]

Posts pagination

  • Page 1
  • Page 2
  • …
  • Page 16
  • »

Languages

  • 日本語
  • 한국어
  • 中文
  • हिन्दी
  • Suomi
  • Español
運営者:桑子研(くわこ けん)
科学の楽しさや不思議、感動を多くの人に届けていきたい。理科教師として勤務する傍ら、サイエンストレーナーとしてテレビ番組の科学監修・出演、実験教室、科学本執筆なども行っています。

Author: Ken Kuwako
I want to share the fun, wonder, and excitement of science with as many people as possible. In addition to my work as a science teacher, I also work as a "Science Trainer," providing scientific supervision for and appearing on TV programs, holding hands-on science workshops, and writing science books.

おすすめの記事等

やめられなくなる!静電気実験

きめる!共通テスト物理基礎

スクリーンショット 2014-07-05 0.43.51

大人のための高校物理復習帳

Recent posts

Why Do Ships Float? Explore the World of Buoyancy with a Simple Water-Pressure Experiment Device

2025年12月12日

Like Magic! A Budget-Friendly Experiment to Control Standing Waves with a Speaker and String

2025年12月11日

The Thermos is a Flute: The Science of the Rising Pitch When Pouring Water

2025年12月11日

Bring Textbook Diagrams to Life! A 3D Google Earth Lesson to Visualize Earthquake Depths

2025年12月10日

Marbles Are High-Performance Lenses! Discover How Light and the Eye Really Work with a Simple Marble

2025年12月9日

The 100-Yen Toy That Makes Invisible Sound and Earthquakes Visible

2025年12月8日

Lift It with Just One Chopstick!? The Science Magic of Rice and a Plastic Bottle (Unleashing the Power of Friction!)

2025年12月7日

Capturing the Winter’s Giant Full Moon with the Smart Telescope “Seestar” — When the Cold Moon Meets the Supermoon

2025年12月6日

Giant Salmon Roe or Tarako?! Make Your Own Mysterious “Water Ball” You Can Hold!

2025年12月5日

Held Up Without Glue! The Magic of Friction from Just Two Toothbrushes

2025年12月4日

Category

  • experiment
  • Science

Archive

  • December 2025
  • November 2025
  • October 2025
  • September 2025
  • August 2025
  • EXPERIMENT
  • MATERIALS
  • SEMINAR
  • PODCAST
  • CONTACT
  • ABOUT

Copyright © 科学のネタ帳 All Rights Reserved.

Powered by WordPress with Lightning Theme & VK All in One Expansion Unit

MENU
  • EXPERIMENT
  • MATERIALS
  • SEMINAR
  • PODCAST
  • CONTACT
  • ABOUT