點解「微波爐叮提子🍇」會製造出 等離子體(Plasma)? 科學家終研究出解釋
炒麵可
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得直徑1.3cm
文科仔本身唔識
以為係偽科學，類似命運石之門叮香蕉
原來高質學術
以為係偽科學，類似命運石之門叮香蕉
原來高質學術
會唔會爆架
叮火柴都得
Internal reflection of waves
仲以為會扯到去核融合果方面
我想知係咩原因導致到佢地會做成internal reflection of waves
係咪因爲提子皮佢有特別既構造而可以reflect waves
係咪因爲提子皮佢有特別既構造而可以reflect waves
未來道具 電話微波爐
呢個post brighten my day
但究竟第一個放粒提子入去叮嘅人諗緊咩
但究竟第一個放粒提子入去叮嘅人諗緊咩
你上面條友唔識亂咁解
A grape is the right size and refractive index to trap microwaves inside it.
Reflection 同 Refraction 係兩樣嘢嚟
n=c/v
簡單講因為velocity of microwave in medium 慢咗所以先會trap住microwave
A grape is the right size and refractive index to trap microwaves inside it.
Reflection 同 Refraction 係兩樣嘢嚟
n=c/v
簡單講因為velocity of microwave in medium 慢咗所以先會trap住microwave
唔關velocity事,情況應該係total internal reflection,唔關個velocity快慢事
好後悔冇讀好 physics
睇唔明
睇唔明
會唔會變綠色啫喱
係咪因為有全內反射困住啲microwave
能量太大所以產生plasma
能量太大所以產生plasma
係,keep住resonance
條友揸機揸得咁撚衰
Specifically, that the effect is a result of aqueous dielectric objects displaying morphology-dependent resonances (MDRs) at microwave frequencies. MDRs are synonymous with Mie resonances, which describe the near-field effects of resonant interactions of light with wavelength-scale objects (3, 4). The objects can be conductive or dielectric and absorptive or transparent, depending on the complex dielectric permittivity of the material.
https://www.pnas.org/content/early/2019/02/13/1818350116
睇曬成篇原文都無提及過total internal reflction
微波爐內部嘅microwaves 都好大機會係omnidirectional, 所以total internal reflection 未必成立
From wiki:
Mie resonances describes the scattering of an electromagnetic plane wave by a homogeneous sphere.
係有resonances
但report 話resonance 係由mie resonances 產生
無理解錯就應該唔係由total internal reflction 去 stack up
關於皮嘅問題：
Apparently a grape's skin has nothing to do with it at all. The authors were able to produce plasma using a simple pair of hydrogel beads as well as gooseberries, large blackberries, and even quail eggs. They concluded that lots of things about the size of a grape with sufficient water content can produce plasma as long as the two objects are less than three millimeters apart.
https://www.pnas.org/content/early/2019/02/13/1818350116
睇曬成篇原文都無提及過total internal reflction
微波爐內部嘅microwaves 都好大機會係omnidirectional, 所以total internal reflection 未必成立
From wiki:
Mie resonances describes the scattering of an electromagnetic plane wave by a homogeneous sphere.
係有resonances
但report 話resonance 係由mie resonances 產生
無理解錯就應該唔係由total internal reflction 去 stack up
關於皮嘅問題：
Apparently a grape's skin has nothing to do with it at all. The authors were able to produce plasma using a simple pair of hydrogel beads as well as gooseberries, large blackberries, and even quail eggs. They concluded that lots of things about the size of a grape with sufficient water content can produce plasma as long as the two objects are less than three millimeters apart.