To calculate \( 4.81 \times 10^{-3} - 0.000094 \), we need to express both numbers in the same format.
First, we can convert \( 0.000094 \) into scientific notation:
\[ 0.000094 = 9.4 \times 10^{-5} \]
Now, we can rewrite the expression:
\[ 4.81 \times 10^{-3} - 9.4 \times 10^{-5} \]
Next, we need to express \( 4.81 \times 10^{-3} \) in terms of \( 10^{-5} \) to perform the subtraction. Since \( 10^{-3} = 100 \times 10^{-5} \), we can rewrite \( 4.81 \times 10^{-3} \) as:
\[ 4.81 \times 10^{-3} = 481 \times 10^{-5} \]
Now, substituting back, we have:
\[ 481 \times 10^{-5} - 9.4 \times 10^{-5} \]
Subtract the two terms:
\[ (481 - 9.4) \times 10^{-5} = 471.6 \times 10^{-5} \]
Now we can convert \( 471.6 \) into scientific notation. We rewrite it as:
\[ 471.6 = 4.716 \times 10^2 \]
Thus, we combine this with \( 10^{-5} \):
\[ 471.6 \times 10^{-5} = 4.716 \times 10^2 \times 10^{-5} = 4.716 \times 10^{-3} \]
Therefore, the final answer in scientific notation is:
\[ \boxed{4.716 \times 10^{-3}} \]