{"id":45082,"date":"2026-09-13T01:28:01","date_gmt":"2026-09-13T01:28:01","guid":{"rendered":"https:\/\/garfnet.org.uk\/cms\/?page_id=45082"},"modified":"2026-09-13T02:06:05","modified_gmt":"2026-09-13T02:06:05","slug":"electromagnetic-spectrum","status":"publish","type":"page","link":"https:\/\/garfnet.org.uk\/cms\/tables\/general\/electromagnetic-spectrum\/","title":{"rendered":"Electromagnetic spectrum"},"content":{"rendered":"

This is an overview of the electromagnetic spectrum and some of the ways that mankind uses it.<\/p>\n

Wavelength (metres)<\/span><\/a><\/div><\/th>
Frequency (Hertz)<\/span><\/a><\/div><\/th>
Purpose<\/span><\/a><\/div><\/th><\/tr><\/thead>
3 \u00d7 108<\/sup><\/div><\/td>
1<\/div><\/td>
<\/div><\/td><\/tr>
1 \u00d7 108<\/sup><\/div><\/td>
3<\/div><\/td>
<\/div><\/td><\/tr>
30000000<\/div><\/td>
10<\/div><\/td>
<\/div><\/td><\/tr>
10000000<\/div><\/td>
30<\/div><\/td>
<\/div><\/td><\/tr>
3000000<\/div><\/td>
100<\/div><\/td>
<\/div><\/td><\/tr>
1000000<\/div><\/td>
300<\/div><\/td>
<\/div><\/td><\/tr>
300000<\/div><\/td>
1,000<\/div><\/td>
<\/div><\/td><\/tr>
100000<\/div><\/td>
3,000<\/div><\/td>
<\/div><\/td><\/tr>
30000<\/div><\/td>
10,000<\/div><\/td>
<\/div><\/td><\/tr>
10000<\/div><\/td>
30,000<\/div><\/td>
<\/div><\/td><\/tr>
3000<\/div><\/td>
100,000<\/div><\/td>
<\/div><\/td><\/tr>
1000<\/div><\/td>
300,000<\/div><\/td>
<\/div><\/td><\/tr>
300<\/div><\/td>
1,000,000<\/div><\/td>
Medium Wave (AM) Radio<\/div><\/td><\/tr>
100<\/div><\/td>
3,000,000<\/div><\/td>
Short Wave Radio<\/div><\/td><\/tr>
30<\/div><\/td>
10,000,000<\/div><\/td>
<\/div><\/td><\/tr>
10<\/div><\/td>
30,000,000<\/div><\/td>
<\/div><\/td><\/tr>
3<\/div><\/td>
100,000,000<\/div><\/td>
VHF (FM) Radio<\/div><\/td><\/tr>
1<\/div><\/td>
300,000,000<\/div><\/td>
UHF TV<\/div><\/td><\/tr>
0.3<\/div><\/td>
1,000,000,000<\/div><\/td>
<\/div><\/td><\/tr>
0.1<\/div><\/td>
3,000,000,000<\/div><\/td>
<\/div><\/td><\/tr>
0.03<\/div><\/td>
10,000,000,000<\/div><\/td>
<\/div><\/td><\/tr>
0.01<\/div><\/td>
30,000,000,000<\/div><\/td>
<\/div><\/td><\/tr>
3.00E-003<\/div><\/td>
100,000,000,000<\/div><\/td>
<\/div><\/td><\/tr>
1.00E-003<\/div><\/td>
300,000,000,000<\/div><\/td>
<\/div><\/td><\/tr>
3.00E-004<\/div><\/td>
1,000,000,000,000<\/div><\/td>
<\/div><\/td><\/tr>
1.00E-004<\/div><\/td>
3,000,000,000,000<\/div><\/td>
<\/div><\/td><\/tr>
3.00E-005<\/div><\/td>
10,000,000,000,000<\/div><\/td>
<\/div><\/td><\/tr>
1.00E-005<\/div><\/td>
30,000,000,000,000<\/div><\/td>
<\/div><\/td><\/tr>
3.00E-006<\/div><\/td>
100,000,000,000,000<\/div><\/td>
<\/div><\/td><\/tr>
1.00E-006<\/div><\/td>
300,000,000,000,000<\/div><\/td>
<\/div><\/td><\/tr>
7.40E-007<\/div><\/td>
405,405,405,405,405<\/div><\/td>
Red Light<\/div><\/td><\/tr>
6.20E-007<\/div><\/td>
483,870,967,741,936<\/div><\/td>
Orange Light<\/div><\/td><\/tr>
5.85E-007<\/div><\/td>
512,820,512,820,513<\/div><\/td>
Yellow Light<\/div><\/td><\/tr>
5.75E-007<\/div><\/td>
521,739,130,434,783<\/div><\/td>
Green Light<\/div><\/td><\/tr>
5.00E-007<\/div><\/td>
600,000,000,000,000<\/div><\/td>
Cyan Light<\/div><\/td><\/tr>
4.90E-007<\/div><\/td>
612,244,897,959,184<\/div><\/td>
Blue Light<\/div><\/td><\/tr>
4.45E-007<\/div><\/td>
674,157,303,370,787<\/div><\/td>
Violet Light<\/div><\/td><\/tr>
3.00E-007<\/div><\/td>
1,000,000,000,000,000<\/div><\/td>
<\/div><\/td><\/tr>
1.00E-007<\/div><\/td>
3,000,000,000,000,000<\/div><\/td>
<\/div><\/td><\/tr>
3.00E-008<\/div><\/td>
10,000,000,000,000,000<\/div><\/td>
<\/div><\/td><\/tr>
1.00E-008<\/div><\/td>
30,000,000,000,000,000<\/div><\/td>
<\/div><\/td><\/tr>
3.00E-009<\/div><\/td>
100,000,000,000,000,000<\/div><\/td>
<\/div><\/td><\/tr>
1.00E-009<\/div><\/td>
300,000,000,000,000,000<\/div><\/td>
<\/div><\/td><\/tr>
3.00E-010<\/div><\/td>
1,000,000,000,000,000,000<\/div><\/td>
<\/div><\/td><\/tr>
1.00E-010<\/div><\/td>
3,000,000,000,000,000,000<\/div><\/td>
<\/div><\/td><\/tr>
3.00E-011<\/div><\/td>
10,000,000,000,000,000,000<\/div><\/td>
<\/div><\/td><\/tr>
1.00E-011<\/div><\/td>
30,000,000,000,000,000,000<\/div><\/td>
<\/div><\/td><\/tr>
3.00E-012<\/div><\/td>
100,000,000,000,000,000,000<\/div><\/td>
<\/div><\/td><\/tr>
1.00E-012<\/div><\/td>
300,000,000,000,000,000,000<\/div><\/td>
<\/div><\/td><\/tr>
3.00E-013<\/div><\/td>
1,000,000,000,000,000,000,000<\/div><\/td>
<\/div><\/td><\/tr>
1.00E-013<\/div><\/td>
3,000,000,000,000,000,000,000<\/div><\/td>
<\/div><\/td><\/tr>
3.00E-014<\/div><\/td>
10,000,000,000,000,000,000,000<\/div><\/td>
<\/div><\/td><\/tr>
1.00E-014<\/div><\/td>
30,000,000,000,000,000,000,000<\/div><\/td>
<\/div><\/td><\/tr><\/tbody><\/table><\/div>\n
\n

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This is an overview of the electromagnetic spectrum and some of the ways that mankind uses it. Home | Tables | General<\/p>\n","protected":false},"author":1,"featured_media":45100,"parent":646,"menu_order":13,"comment_status":"closed","ping_status":"closed","template":"","meta":{"ngg_post_thumbnail":0,"_kad_post_transparent":"default","_kad_post_title":"default","_kad_post_layout":"default","_kad_post_sidebar_id":"","_kad_post_content_style":"default","_kad_post_vertical_padding":"default","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":"","footnotes":""},"class_list":["post-45082","page","type-page","status-publish","has-post-thumbnail","hentry"],"yoast_head":"\nElectromagnetic spectrum - GarfNet<\/title>\n<meta name=\"description\" content=\"This is an overview of the electromagnetic spectrum and the various ways that mankind uses it.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/garfnet.org.uk\/cms\/tables\/general\/electromagnetic-spectrum\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Electromagnetic spectrum - 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