Yes, you would absolutely die. Here's why:
• Extreme Temperature: The Sun's surface (the photosphere) has an average temperature of about 9,940 degrees Fahrenheit (5,505 degrees Celsius). Even a millisecond of exposure to such intense heat would cause catastrophic burns, instantly vaporizing the water in your body and incinerating your tissues.
• Radiation: The Sun emits vast amounts of electromagnetic radiation, including harmful X-rays and gamma rays. While Earth's atmosphere protects us, on the Sun's surface, you'd be exposed to lethal doses of radiation in an instant. This would cause immediate cellular damage and organ failure.
• Pressure/Gravity: While the "surface" of the Sun isn't solid in the way Earth's is (it's a superheated plasma), the gravitational forces are immense. Even if you weren't instantly incinerated, the extreme pressure and gravity would crush you.
• Atmosphere (or lack thereof): The Sun doesn't have an atmosphere in the breathable sense. You'd be in a vacuum mixed with superheated plasma, which is completely incompatible with life.
Think of it this way: Even a tiny fraction of a second is an eternity when dealing with conditions so utterly hostile to human life. The damage would be instantaneous and irreversible. Your body simply wouldn't have time to react; it would be destroyed almost immediately upon arrival.