Differences
This shows you the differences between two versions of the page.
Both sides previous revisionPrevious revision | Last revisionBoth sides next revision |
howto:hambasics:sections:intro [2022/09/13 23:02] – [Full Frequency List] va7fi | howto:hambasics:sections:intro [2022/11/04 18:34] – [Intro to Radio Waves] va7fi |
---|
| |
There's a lot of stuff in between, but it's pretty much radio waves all the way down. However, turning the dial above the FM radio stations yields some surprises: | There's a lot of stuff in between, but it's pretty much radio waves all the way down. However, turning the dial above the FM radio stations yields some surprises: |
* At 2.4 GHz (or 2400 MHz) and 5 GHz (or 5000 Mhz), you'd be interfering with WiFi signals. | * At 2.4 GHz (or 2400 MHz) and 5.8 GHz (or 5800 Mhz), you'd be interfering with WiFi signals. |
* Between 30 and 120 THz (30,000 and 120,000 GHz), you'd be in the mid-infrared range and your antenna would start to feel warm. | * Between 30 and 120 THz (30,000 and 120,000 GHz), you'd be in the mid-infrared range and your antenna would start to feel warm. |
* At <fc #ff0000>400 THz</fc>, the antenna would start glowing red.((As we'll see later, the "antenna" would also get smaller, the higher the frequency. So you can think of the rods and cones in your eyes as antennas tuned to the colours we can see.)) By increasing the frequency, you'd go through all the colours of the <fc #ff0000>r</fc><fc #ffa500>a</fc><fc #ffff00>i</fc><fc #008000>n</fc><fc #4682b4>b</fc><fc #9400d3>o</fc><fc #800080>w</fc> until the last purple would vanish around <fc #800080>790 THz</fc>. | * At <fc #ff0000>400 THz</fc>, the antenna would start glowing red.((As we'll see later, the "antenna" would also get smaller, the higher the frequency. So you can think of the rods and cones in your eyes as antennas tuned to the colours we can see.)) By increasing the frequency, you'd go through all the colours of the <fc #ff0000>r</fc><fc #ffa500>a</fc><fc #ffff00>i</fc><fc #008000>n</fc><fc #4682b4>b</fc><fc #9400d3>o</fc><fc #800080>w</fc> until the last purple would vanish around <fc #800080>790 THz</fc>. |