Radiation warning with text

1280 × 1024

Radioactive symbol on red background

1024 × 768

Abandon Hope Sign

1920 × 1080

glowing radiation symbol on wall

1920 × 1200

Windows XP radiation warning

800 × 600

Biohazard Symbol — Red, Dramatic

1024 × 768

Warning Sign with Text — Blue, Humorous

1544 × 1136

Biohazard Symbol — Red, Dramatic, Digital Art, Red Background

1366 × 768

Caution: Floor is Lava Sign

1600 × 900

Radioactive Symbol — Red

1055 × 791

Biohazard Symbol — Black, Ominous, Vector Art

1280 × 960

Erwin Schrödinger Portrait — Red, Warning, Illustration

1680 × 1050