波长和频率计算器
转换波长 频率 获得光子能量和频谱带
输入结果时更新 。
关于此计算器
Every wave obeys the same simple relationship: its speed equals its wavelength times its frequency, so wavelength λ = c / f and frequency f = c / λ. For electromagnetic waves in a vacuum the speed is the speed of light, c = 299,792,458 m/s (about 3 × 10⁸ m/s). Because that product is fixed, wavelength and frequency are inversely related — higher frequency always means shorter wavelength. This calculator converts either way, reports the period (T = 1 / f) and the photon energy, and names the electromagnetic band the result falls in, from radio through microwave, infrared, visible light, ultraviolet, X-ray and gamma ray.
As a worked example, an FM radio station at 100 MHz (10⁸ Hz) has a wavelength of λ = 3 × 10⁸ / 10⁸ = 3 metres — which is why FM antennas are on the order of a metre long. Green light at about 5.5 × 10¹⁴ Hz has a wavelength near 545 nm, squarely in the visible band. The tool also returns each photon’s energy from E = h × f, using Planck’s constant h = 6.62607015 × 10⁻³⁴ J·s, and shows it in both joules and electron-volts.
Higher-frequency light carries more energy per photon, which is why blue and ultraviolet light can drive chemical reactions and damage skin while radio waves cannot. You can also override the wave speed under advanced options to model waves in other media — light in glass, or sound in air — where the propagation speed differs from that of light in a vacuum. These conversions are fundamental to radio and antenna design, optics, spectroscopy and understanding the electromagnetic spectrum.
经常问到的问题
波长和频率之间有何关联?
它们通过波速反向相连: = = c / f. 高频是指较短波长, 因为它们的产品是恒定光速。
光子能量是如何计算的?
光子的能量是E=h × f,h= 6.62607015 × 10-34 J-s.高频光(蓝色、紫外线)每光子的能量比低频光高。
电磁频谱波段是什么?
频率上升的顺序是:无线电(低于~3千兆赫)、微波、红外线、可见光(~430-770千兆赫)、紫外线、X射线和伽马射线。
其它媒体能用它来表达声音或发出波浪吗?
Yes. Set the advanced wave-speed field to the speed in your medium — about 343 m/s for sound in air, or roughly 2 × 10⁸ m/s for light in glass — and the wavelength ↔ frequency conversion uses that speed instead of the vacuum speed of light.
浪浪的时期是什么?
整个周期的周期为T=1/f.100兆赫波10-8秒(10毫秒),该工具报告周期与频率同期。
我如何转换一个以纳米计的波长?
输入它—— 计算器格式将自动在 pm、 nm、 m 和 km 之间产生结果。 可见光光运行大约400 nm (紫外线) 到 700 nm (红), 所以在可见带的绿部分输入545 nm 。
API - 使用代码中的计算器
将此计算器称为自由 JSON 端点 。 不需要按键 。 将字段值发送到下面作为查询参数或 JSON 。 任何您省略的, 都会使用相同的默认值, 此页面预填的默认值是预填的; 未知参数是 400, 而不是静音零 。 读取 API 全部文件 →
终点
GET https://calculator.free/api/v1/wavelength-frequency/curl
curl "https://calculator.free/api/v1/wavelength-frequency/?solve=wavelength&frequency=100000000&wavelength=3"JavaScript fetch()
const r = await fetch(
"https://calculator.free/api/v1/wavelength-frequency/?" + new URLSearchParams({
"solve": "wavelength",
"frequency": "100000000",
"wavelength": "3"
}));
const data = await r.json();
console.log(data.results);成果仅是一般指导的估计数,而不是财务、医疗或税务咨询。